List of geotopes in the Kelheim district

This list contains the geotopes of the Lower Bavarian district of Kelheim in Bavaria . The list contains the official names and numbers of the Bavarian State Office for the Environment (LfU) as well as their geographical location. This list may not be complete. Around 3,400 geotopes (as of March 2020) are recorded in the Bavarian geotope register. The LfU does not consider some geotopes suitable for publication on the Internet. For example, some objects are not safely accessible or may only be entered to a limited extent for other reasons.

Surname	image	Geotope ID	Municipality / location	Geological unit of space	description	Area m² / extension m	geology	Digestion type	value	Protection status	comment
Flügelsberg near Meihern	more pictures	273A001	Riedenburg position	Southern Franconian Alb	The rock spur shows reef dolomites of the Middle Malm, which are cut in the top and overlaid by thin-banked dolomitic limestone of the Malm Epsilon. The stratified limestone shows a connection between the stratified facies basins of Dietfurt and Painten (located between reefs) over the Speckelsberger Canal. A thin bank of conglomerates at the base of the stratified limestone indicates submarine erosion in the canal.	1600 80 × 20	Type: Discordance, rock type, layer sequence, rock tower / needle Type: dolomite stone, limestone	Slope crack / rock wall	precious	Natural monument, landscape protection area, FFH area
Former quarry N of Jachenhausen		273A002	Riedenburg position	Southern Franconian Alb	In the former quarry on the western edge of the Paintner Plattenkalkwanne, Plattenkalke from the lower Malm Zeta has been mined for use as roof panels since the 19th century. After the closure in the 1980s, the quarry was largely backfilled. There are only a few small outcrops left. Characteristic for the sequence of layers in Jachenhausen were the crooked layers - sliding folds that had arisen in submarine landslides. Some important fossil finds have been made in the quarry. While fossils can still be found, the Krumme Lagen are no longer accessible, apart from sparse hints and remnants.	20000 200 × 100	Type: Animal Fossils, Sedimentary Structures Type: Limestone	Quarry	precious	Landscape protection area, nature park
Former Lime Kiln W quarry from Bad Abbach		273A005	Bad Abbach position	Southern Franconian Alb	The break opens up dolomitized reef limestone, overlaid with an undulating transgression surface by Regensburg green sandstone. The rocks are criss-crossed by vertical fissures. In karst crevices there are gray sands of the lower Cretaceous protective rock layers.	900 90 × 10	Type: Discordance, sequence of layers Type: Dolomite stone	Quarry	precious	no protected area
Former quarry ENE from Netzstall		273A007	Painten position	Southern Franconian Alb	The bank limestone (below) and Kieselkalke and plate silex (above) in the small quarry already described by ROLL (1940) belong to the Torleite formation (Malm Epsilon 1 + 2). The bank limestone represents the normal form of the Torleite formation and is today - named after this outcrop - referred to as the Netzstall subformation (formerly the subemela zone), while the Kieselkalke and plate silex belong to the Arnstorf subformation (formerly the setatus zone). The quarry has overgrown today. And the wall, which has been open for more than 80 years, has already fallen into disrepair. Where it is still accessible, it has dangerous overhangs. so that there is a risk of falling. Therefore this exposure should only be viewed from the street!	30 15 × 2	Type: Type locality, Layer sequence, Animal fossils Type: Limestone	Quarry	precious	Landscape protection area
Silicified layers of Reinhausen NE from Kelheim		273A008	Frauenforst position	Southern Franconian Alb	In the area of the summit at height 495, ancient tertiary silicification occurs in Reinhausen layers (Unterturon). The gray, hard rock shows few primary rock features. On a nearly 1 m high cliff, however, layer joints can be seen relictly (outcrop overgrown). In the area there are some individual blocks of silicified rocks, so-called Kallmünzer. Both the timing and the process of pebbles have not yet been satisfactorily clarified.	250 25 × 10	Type: Rock type, relic rock Type: sand-lime brick	Rock slope / cliff	significant	no protected area
Former quarries E from Kelheimwinzer		273A009	Kelheim position	Southern Franconian Alb	There are some very dilapidated old quarries on the slope. Upcoming are Jura limestone, overlaid by a 3–5 meter thick Schotternagelfluh. The gravel is mainly made up of alpine gravel, along with layers of shardy to rounded Jura limestone. It is a testimony to the Old Pleistocene course of the Danube. Since the foot of the embankment is heavily overgrown and difficult to walk on, the outcrops are hardly accessible.	360 120 × 3	Type: Discordance, Terrace Type: Conglomerate, Limestone	Quarry	precious	FFH area
Former quarry on the Teufelsfelsen SW of Alkofen		273A010	Bad Abbach position	Southern Franconian Alb	In the quarry, Jurassic limestone from the Kelheim facies as well as Regensburg's lower green sandstones are exposed. Deep crevices and caves can be seen in the limestone, which were filled with precenomaniac and cenomaniac sediments during the transgression.	200 20 × 10	Type: sequence of layers, discordance, karst chimney, karst crevice Type: limestone, sandstone	Quarry	significant	Natural monument
Former quarries at Mühlberg SE from Dantschermühle		273A011	Bad Abbach position	Southern Franconian Alb	The old quarries at the Dantschermühle show the most comprehensive chalk profile in the Kelheim district: Regensburg Formation, Eibrunn Formation (with the micro-palaeontologically proven Cenoman-Turon boundary) and Reinhausen subformation of the Winzerberg Formation. Only the green sandstone is easily accessible, while the erosion-sensitive overlapping layers have largely slipped and rolled over. The aim of mining was the massive Lower Green Sandstone of the Regensburg Formation, which shows clear signs of processing.	2400 80 × 30	Type: Type locality, animal fossils, layer sequence Type: sand-lime brick, marlstone	Quarry	especially valuable	Natural monument
Plattenkalke E from Haderfleck		273A013	Kelheim position	Southern Franconian Alb	In the lower part of the Danube slope, layers of Malm Zeta 1–2 (Solnhofen layers) occur in the form of plate limestone and a few thin limestone slates. The majority of the layer structure is deformed by a noticeable sliding fold. Up the slope there is an abrupt transition to the paper slates of the Malm Zeta 3a. This digestion part is difficult to access and largely dilapidated. The plate limestone near Haderfleck is one of the stratified facies of the Hienheimer Wanne.	2400 80 × 30	Type: Sediment structures, layer sequence Type: Limestone	Impact slope / river bed / stream profile	significant	Landscape protection area, FFH area, nature park
Former paper slate quarry S from Hohenpfahl		273A014	Kelheim position	Southern Franconian Alb	Plate limestone and slate (thin-layer limestone less than 1 cm thick) of the Kelheim tub are exposed in two quarries (Malm zeta 2 and 3). In the lower part, so-called cardboard slate occurs in addition to plate limestone. For hanging walls, the layer thickness is reduced to a few mm for paper slate. The high clay content makes the paper slate sequence very susceptible to weathering. The breaks therefore expire quickly. Today only part of the shift sequence is unlocked.	50 10 × 5	Type: Rock type, Sedimentary structures Type: Limestone	Quarry	significant	no protected area
Former quarry on Linsberg NE of Abensberg		273A015	Abensberg position	Southern Franconian Alb	The small quarry opened up a sequence of layers on the northwest edge of the Pullacher tub. Above the choppy, wavy upper limit of the Kelheimer Kalk, which dipped into the SW, and interlocked with it, there followed bank limes with fine and coarse rubble layers and chert (sometimes referred to as Abensberg limestone in the literature). The profile on the upper part of the west wall, which is still open today, shows slab limestone with banded chert slabs and thin banks containing fine debris. The rest of the profile is covered.	1000 50 × 20	Type: Layer sequence Type: Limestone, chert	Quarry	precious	Natural monument
Western Seeholzbruch NW of Offenstetten		273A016	Abensberg position	Danube-Isar hill country	In the former quarry, the following sequence of layers was exposed: chalky mortar limestone, chert-rich limestone, Abensberg bank limestone and normal plate limestone of the lower Malm Zeta followed over massive fossil-rich Kelheim limestone. The area is now quite overgrown and collapsed. Only the upper section of the profile with bench and slab limestone is clearly visible.	5000 100 × 50	Type: Layer sequence Type: Limestone	Quarry	significant	Natural monument
Exposure at Eichelberg E from Marching		273A018	Neustadt an der Donau position	Donaumoos	The former mining site on the Danube slope shows weathered reef dolomite, which is covered by a thick layer of loess. The outcrop is strongly overgrown and decayed and therefore almost inaccessible.	30 15 × 2	Type: Rock type: Dolomite stone, clay	Slope crack / rock wall	significant	Landscape protection area
Paper slate outcrop S from Weltenburg		273A019	Kelheim position	Southern Franconian Alb	In the small outcropping, slide-folded plate limestone from the Malm Zeta 2 and above it paper slate from the Malm Zeta 3 (can be bent when the mountain is damp!) Can be seen. Today this outcrop has almost completely collapsed and overgrown. Only a short section of the paper slate sequence can still be seen.	80 10 × 8	Type: Layer sequence Type: Limestone	Quarry	significant	FFH area
Former dolomite quarry NE of Marching		273A021	Neustadt an der Donau position	Southern Franconian Alb	Large former quarry in the massive reef dolomites of the Altmannstein-Marchinger reef range. The former mass limestone (sponge algae reef limestone) were later dolomitized.	25000 250 × 100	Type: Rock Type: Dolomite Stone	Quarry	inferior	Landscape component
Quarries at Hanselberg W of Oberndorf		273A024	Bad Abbach position	Southern Franconian Alb	On the Danube slope west of Oberndorf, massive reef dolomites of the Malm epsilon to zeta (Oberkimmeridge / Untertithon) are exposed by several now abandoned quarries with walls more than 40 m high. As a result of the late diagenetic dolomitization, fossils and original structures of the rock have largely disappeared. Numerous karst cavities, some of which were filled with clay, were cut through the mining. In the fall blocks there is old sinter (stalactites).	12000 300 × 40	Type: Rock type, karst chimney, karst crevice Type: dolomite stone	Quarry	significant	FFH area, bird sanctuary
Kreuzfelsen near Riedenburg		273A027	Riedenburg position	Southern Franconian Alb	The rocks on the east side of the Schambach valley show two dolomite reef domes from the Malm Delta. The individual domes have a diameter of 80 - 100 m and arch about 20 m high (onion-skin-like thick sponge dolomite benches).	16000 200 × 80	Type: Sedimentary structures, rock wall / slope Type: Dolomite stone	Slope crack / rock wall	precious	Natural monument, bird sanctuary, nature park
Former Buchenhöhe NNE quarry by Painten		273A028	Painten position	Southern Franconian Alb	The abandoned quarry on Buchenhöhe, directly opposite the large Rygol quarry, opens up banked Jurassic limestone from the area of the Paintner slab of limestone tub. The sequence of layers comprises part of the profile (Malm epsilon / zeta).	2500 50 × 50	Type: Type of rock, sequence of layers, sedimentary structures Type: Limestone	Quarry	significant	no protected area
Green sand quarries near Ihrlerstein	more pictures	273A029	Ihrlerstein position	Southern Franconian Alb	The Ihrlerstein quarries with Jura limestone and overlying chalk sandstones are the place of origin of the building blocks of numerous buildings by King Ludwig I (including the Liberation Hall). While the law break has long been abandoned, z. B. won Regensburg green sandstone for the construction of the Neue Pinakothek until the 1980s. The exposed profile shows 2 thick banks (each 3–4 m) made of greenish sandstone with many thick-shelled shells and overlying 5–6 m thin-banked sand-lime brick.	1600 80 × 20	Type: sequence of layers, type of rock, sediment structures Type: sand-lime brick	Quarry	significant	Natural park
Reef debris exposure in Riedenburg		273A031	Riedenburg position	Southern Franconian Alb	In a small outcrop directly on the Austraße in Riedenburg, meter-thick dolomite banks that are inclined approx. 40 ° to the northeast are exposed. They document the very steep collapse of a reef dome of the middle Malm (Upper Jura). The banks are partially formed by dolomite breccias, the components of which are cm to several dm in size. These breccias are interpreted as reef debris that was created by erosion near the surface of the water during reef growth. The outcrop in Riedenburg is one of the very few places where such breccia in the Franconian dolomite are so easily accessible.	150 30 × 5	Type: Sediment structures, layer sequence, type of rock Type: Breccia, dolomite stone	other information	precious	Natural park
Bentonite mining NW of Straß		273G001	Mainburg position	Danube-Isar hill country	The former open-cast mine on bentonite is located approx. 250 m NW of Straß im Wald. The last time it was mined here was between the 1940s and 1950s. Pings indicate an underground mine. The occurrence is one of the few places in the Bavarian Molasse where the volcanic tuffs that have been converted to bentonite are directly in line. There is currently no evidence, but there are reading stones of a greenish, hard and platy rock (known as hard plate) that was discarded as overburden. In the meantime (2014) a new opencast mine has moved closer to the old mining tracks.	100 10 × 10	Type: quarry / pit, rock type: bentonite	Clay pit / clay pit / marl pit	precious	no protected area
Rocks at the SW Lion Monument in Bad Abbach	more pictures	273G002	Bad Abbach position	Southern Franconian Alb	During floods, the road connection for the stagecoach between Saal and Abbach was interrupted. Therefore, in the years 1794 to 1792, extensive work was carried out on the Danube prall slope to improve the situation. For this purpose, larger explosions were carried out on the rock walls. The blasted material was used to raise the road over the Danube bank. The memorial plaque and lion monument are intended to commemorate this high engineering achievement for the time.	25000 250 × 100	Type: Machined Rock Type: Limestone	embankment	significant	Natural monument
Old brickworks E by Marching		273G003	Neustadt an der Donau position	Southern Franconian Alb	The mine site of the former Marching brickworks is badly dilapidated and overgrown. There are still impressive remains of the brickworks. Behind the ruins of the kilns, worm-glacial loess loam and loess are cut into the pit wall. The deeper, brown loess loam of the Riß-Würm interglacial soil is no longer exposed. The loess wall, which is a maximum of 2.5 m high, has numerous breeding tunnels for birds and insects.	60 30 × 2	Type: Kiln / Brickyard, Type of Rock, Fossil Soil Type: Loess, Loess Loam	Clay pit / clay pit / marl pit	precious	no protected area
Neolithic chert quarries near Arnhofen		273G004	Abensberg position	Danube-Isar hill country	In 1984–86 excavations in former mining pits were carried out in the gravel pit area. Devices made of chert from the Pullacher Wanne are widely used by Middle Neolithic settlements, as the flat design of the raw material suited the style of weapons and devices (narrow blades and points) preferred at the time. According to existing studies, Arnhofen can be used as a production center for chert tools in the Middle Neolithic.		Type: Manhole Type: Chert	Quarry	precious	no protected area	Possibly deleted by the LfU (Oct. 2018)
Mine field at Hirschberg W of Kelheim		273G005	Hienheimer Forst position	Southern Franconian Alb	On the spur between Altmühl and the Danube, there are several excavation pit fields as witnesses to historical ore mining. So-called floor ores (iron hydroxide concretions) that were already mined by the Celts for iron production are enriched in the residual clay of the Alb cover. The Iron Age quarries can be recognized as wide, irregular pits, deep funnel pits come from mining shafts of the early Middle Ages. The field at the Keltenwall is an example of a mining field.	100000 500 × 200	Type: Pinge field Type: Iron / manganese ore, clay, sand	no information	significant	Nature reserve, ground monument, landscape protection area
Stalactite cave Schulerloch (show cave)	more pictures	273H001	Essing position	Southern Franconian Alb	The Große Schulerloch, which can be safely visited as a show cave, is one of the longest caves in the area of the Lower Altmühltal with a measured passage length of 420 m. The largest room in the cave covers almost 800 m² and is 8 m high. The cave has interesting stalactite decorations in places. Scientific excavations in the cave sediment yielded not only bone finds from Ice Age animals, but also archaeological finds from the Paleolithic and Mesolithic as well as the Bronze Age.	1260 420 × 3	Type: Karst Horizontal Cave Type: Limestone	cave	precious	Nature reserve, natural monument, landscape protection area
Bottomless pit NE of Ihrlerstein		273H002	Frauenforst position	Southern Franconian Alb	The bottomless pit is less of a sinkhole than a shaft cave. It is an approximately 35 m deep shaft with a 3–4 m wide opening. The funnel-shaped opening is in the green sandstone, after 6 m the limit to the Jura mass limestone is reached. Here the shaft expands to 7–9 m. From this depth onwards there is an increasing narrowing. The sole is filled with loose material. The Grundlose Grube belongs to the younger (Quaternary) age karst phenomena. The Grundlose Grube is an important bat roost throughout Europe. In order to maintain the cave as a year-round habitat, there is therefore a YEAR-ROUND BAN! Speleology research is possible in individual cases, but requires a special permit. The contact person is the Lower Nature Conservation Authority at the Kelheim District Office.	315 35 × 9	Type: Karst shaft cave Type: Limestone	no information	precious	FFH area
Klausenhöhlen W of Neuessing	more pictures	273H003	Essing position	Southern Franconian Alb	On the rocky slope opposite Essing, several caves and half-caves (Abri) follow one another in layers. The caves document various stages of deepening of the karst water table, coupled with the deepening of the Altmühl-Danube. The hall-like Klausen caves are among the most important ice age sites in Bavaria. A 70 m long, winding corridor connects to the vestibule at the uppermost western hermitage.	3500 70 × 50	Type: Karst Horizontal Cave, Animal Fossils Type: Limestone	cave	precious	Landscape protection area, FFH area, bird sanctuary
Sulfur springs in the Sippenauer Moor SE of Mitterfecking	more pictures	273Q001	Hall on the Danube position	Southern Franconian Alb	On the southern edge of the Feckinger Valley, around 20 smaller springs with discharges of up to 5 l / s arise. The spring water, which has a distinct smell of hydrogen sulphide (H ₂ S) as a special feature , comes from the karstified Malm under the Molasse basin. The springs trace a fault zone where the malt lime board has broken and which provides good transport routes for the karst water. Characteristic white bacterial lawns line the watercourses of the sulphurous waters.	4 2 × 2	Type: Constriction Source Type: Limestone	no information	especially valuable	Nature reserve, FFH area
Karst spring in Gundlfing	more pictures	273Q002	Riedenburg position	Southern Franconian Alb	The karst spring, which is located near the source area to power a mill, is the outlet point of an extensive karst water system in the Malm limestone. Attempts at marking show the connection between the source and sinkholes in the Perletzhofen area. The flow rate is an average of 35 l / s, but can rise to many 100 l / s in the event of breakthroughs in temporarily blocked sinkholes.	40 8 × 5	Type: Constriction Source Type: Limestone	no information	precious	Natural monument, landscape protection area, nature park
Blautopf Weihermühle NW from Essing	more pictures	273Q003	Essing position	Southern Franconian Alb	At the valley level at the foot of the rocky slope, karst water emerges in a spring pot several meters deep, which flows directly into the Altmühl in a small stream. The mean flow rate is approx. 300 l / s. The karst spring Weihermühle shows the greatest difference between low and high water levels of the springs in the lower Altmühltal. The substances were detected in the source in marking tests with inputs from tracers at Painten, Grafenstadl, Keilsdorf.	96 12 × 8	Type: Constriction Source Type: Limestone	no information	precious	Bird sanctuary, nature park
Petersbrunnen in Deising	more pictures	273Q004	Riedenburg position	Southern Franconian Alb	In Deising, a karst spring emerges below the church just above the bottom of the Altmühltal. The mean flow rate is 350 l / s. Part of the spring outlet is blocked, the remaining water flows out of two spring funnels in the adjoining brook bed (trout farm). Marking tests have shown that the plateau to the west of the Petersbrunnen in Deising drains.	75 25 × 3	Type: Constriction Source Type: Limestone	no information	significant	Natural park
Dolomite rock with ruins Tachenstein W von Riedenburg	more pictures	273R001	Riedenburg position	Southern Franconian Alb	The rock massif represents the weathered remnant of a wide-span reef dome made of dolomite (Malm Delta). The ruin already stands on the thick-banked Dolomites of the Malm Epsilon. The remains of caves and karst phenomena can be seen below the ruins. The cave ruins are the remains of a fossil, high-lying karst system.	30000 300 × 100	Type: rock castle, karst halfway / natural bridge, rock tower / needle Type: dolomite stone	Slope crack / rock wall	precious	Natural monument, landscape protection area, FFH area
Frauenstein S from Riedenburg		273R002	Riedenburg position	Southern Franconian Alb	The Frauenstein is a rounded, weathered dolomite block with a rock needle sitting on it. A statue of the Virgin Mary is placed in a rock niche.	15 5 × 3	Type: Rock tower / needle Type: Dolomite stone	Slope crack / rock wall	inferior	Natural monument, landscape protection area, FFH area
Lookout rock N of Obereggersberg		273R003	Riedenburg position	Southern Franconian Alb	The Schlossfelsen Untereggersberg is a striking dolomite rock on the Altmühl-Prallhang. In the Upper Jurassic, a shallow sea with reef areas and basins covered the area of today's Franconian Alb. During the Malm Delta the massive reefs reached their greatest extent. The rocks, which were transformed into dolomite in the course of diagenesis, are now carved out as rock towers and give the landscape of the lower Altmühltal its unique character.	800 40 × 20	Type: Felsburg Type: Dolomite stone	Slope crack / rock wall	significant	Landscape reserve, bird sanctuary, nature park
Armchair rock wall near Neuessing	more pictures	273R004	Essing position	Southern Franconian Alb	Imposing mass limestone rock face with a reef dome structure. The vertical fracturing of the rock creates tower-shaped weathering forms. Coves and rock roofs at the foot of the rock face (immediately behind the houses) are due to the erosion of the Altmühldonau. Paleolithic finds were made in the half caves. The wall itself is a disruption surface.	37000 370 × 100	Type: rock wall / slope, karst halfway / natural bridge Type: limestone	Slope crack / rock wall	precious	Landscape protection area, FFH area, nature park
Weltenburger narrow	more pictures	273R005	Kelheim position	Southern Franconian Alb	The Weltenburger Enge is interpreted as an epigenetic breakthrough valley of a Pleistocene Altmühl-Danube tributary (Ingolstadt Albsaumfluss). The Danube itself has only been using this valley for around 70,000 years. The narrow valley is bounded by high massive rock walls in which smaller caves have been developed. As early as 1840, King Ludwig I ordered that the Weltenburger Narrows be preserved. This makes the NSG Weltenburger Enge both the first nature reserve in Bavaria and the longest-serving geotope. In 1978 the NSG was also awarded the European Diploma.	2200000 5500 × 400	Type: breakthrough valley, rock wall / slope, karst horizontal cave Type: Limestone	Impact slope / river bed / stream profile	especially valuable	Nature reserve, landscape protection area, FFH area	Bavaria's most beautiful geotopes No. 13
Castle rock Prunn N of Nusshausen	more pictures	273R006	Riedenburg position	Southern Franconian Alb	Prunn Palace is enthroned on a striking limestone rock that rises high above the Altmühltal. The rocks were formed in the Upper Jurassic in the Malm delta and epsilon. The higher parts probably extend into the Malm zeta. The rocks made of plump rock limestone near Prunn are among the most important landscape-shaping elements of the lower Altmühltal. From the castle rock you have a wide view over the Altmühltal.	80000 800 × 100	Type: Rock Castle Type: Limestone	Slope crack / rock wall	significant	Nature reserve, landscape protection area, FFH area
Sippenauer Moor ESE from Mitterfecking	more pictures	273R007	Hall on the Danube position	Southern Franconian Alb	The Sippenauer Moor (or Moos) in Feckinger Tal is a low moor with littered meadows, reed areas and sparse trees. It is fed by a large number of sources, especially on its southwestern edge. High hydrogen sulfide contents in the springs favored the deposition of sapropeles (digested sludge) within the peat formations.	120000 600 × 200	Type: fen, constriction source Type: peat	no information	significant	Nature reserve, FFH area
Falkenhorstfelsen W of Jachenhausen		273R008	Riedenburg position	Southern Franconian Alb	The Falkenhorstfelsen, a rock spur made of reef dolomite on the Altmühl-Prallhang, is one of the many rock towers that give the Altmühltal its unmistakable appearance and make up the charm of the landscape.	3000 150 × 20	Type: Rock tower / needle Type: Dolomite stone	Slope crack / rock wall	significant	Nature park, landscape protection area, FFH area
Schlossberg Rosenburg near Riedenburg	more pictures	273R009	Riedenburg position	Southern Franconian Alb	The reef formation that has progressed since the lower Malm led to extensive reefs in the area around Riedenburg. Reef formers were mainly sponge and algae colonies. The reef dolomite rocks on the Schlossberg trace the shape of the former sponge reef with indistinct layer joints.	30000 300 × 100	Type: Felsburg Type: Dolomite stone	Slope crack / rock wall	significant	Landscape protection area, FFH area, nature park
Devil's Rock SW of Alkofen		273R010	Bad Abbach position	Southern Franconian Alb	Approx. 200 m long and 60 m high rock face in massive reef limestone on the former Danube slope. The rock consists of massive sponge algae reef limestone with transitions to Kelheim limestone (fossil rubble limestone). A rock fall occurred in the southern part of the rock, which is criss-crossed by caves.	400 200 × 2	Type: Rock wall / slope, Rock fall Type: Limestone	Slope crack / rock wall	significant	Natural monument
Dunes in Seeholz NW of Offenstetten	more pictures	273R011	Abensberg position	Danube-Isar hill country	In the Seeholz between Abensberg and Offenstetten there are remains of an extensive dune landscape from the late to postglacial on high terrace gravel (Altabens terrace). The geomorphological treasure trove has been preserved under the forest cover (as opposed to agricultural areas). The dunes are mainly designed as line dunes facing WE, but there are also transverse and sickle dunes. After W, the relief forms flatten to form flat-waved drifting sand covers.	140000 700 × 200	Type: Dune field Type: Sand	no information	significant	Nature reserve, FFH area	Bavaria's most beautiful geotopes No. 78
Dunes W of Siegenburg		273R012	Siegenburg position	Danube-Isar hill country	At the edge of the Abenstal, in the east of the Dürnbuch forest, you come across a large field of sand dunes. At the end of the Pleistocene and early Holocene, a dry, cold climate with strong westerly winds favored the formation of drifting sand dunes. A large part of the dunes here are designed as line dunes, which are parallel to the prevailing wind direction in west-east direction, but also cross and sickle dunes occur.	150,000 750 × 200	Type: Dune field Type: Sand	no information	significant	Nature reserve, landscape protection area, FFH area
Hopfenbachfall WSW from Großmuß		273R015	Hall on the Danube position	Danube-Isar hill country	The Hopfenbach, which rises in the Upper Miocene gravels and sands southeast of Bachl, seeps away at a creek subsurface where the water reaches the karstification-capable Malm limestone. The Hopfenabchtal continues as a dry valley. Depending on the water flow, the stream disappears in a sinkhole with almost no backwater or accumulates to form a larger lake area. Above-ground drainage through the Hopfenbachtal is only carried out when there is a very high water supply.	25 5 × 5	Type: Stream shrinkage Type: Clay, marl, limestone	no information	precious	no protected area
Kallmünzer in Jachenhausener Grund		273R016	Riedenburg position	Southern Franconian Alb	On the northern slope at height 532.9, NE of Jachenhausen, there are six cubic meter-sized blocks of silicified Cretan sandstone (Kallmünzer).	2000 50x40	Type: Relic Rocks Type: Quartz Sandstone	block	significant	Landscape protection area
Gorge with caves SE of Riedenburg		273R017	Riedenburg position	Southern Franconian Alb	Between Prunn and Einthal, the Altmühl forms a gorge with several rock exposures up to 40 m high and some small caves. The caves in the Franconian dolomite were evidently already inhabited in the early Paleolithic. A regional hiking trail (Altmühltal-Panoramaweg) opens up the gorge and the gorge cave.	36000 400 × 90	Type: Klamm Type: Dolomite stone	Slope crack / rock wall	precious	Nature reserve, landscape protection area, FFH area