List of geotopes in the Straubing-Bogen district

This list contains the geotopes of the Lower Bavarian district of Straubing-Bogen 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
Road exposure on the Aigenberg NE of Gneißen	more pictures	278A002	Rattenberg position	Front Bavarian Forest	The road outcrop cuts a fault zone (mylonite) in pearl-gneiss-like cordierite-sillimanite gneiss . Rocks are found next to each other that still show a pronounced layer structure, while others are dominated by a pearl structure. In some areas, there is a noticeable network of vertical movement areas with partially pronounced harness straps. The outcrop belongs to an approximately 1.5 km wide and more than 15 km long NNW-SSE fault zone of a secondary pile.	800 200 × 4	Type: fault, rock type: mylonite, gneiss	embankment	significant	Landscape protection area, nature park
Road outcrop N of Pürgl		278A003	Haibach position	Front Bavarian Forest	Cordierite-sillimanite gneisses with pearl texture are lining the street. The rocks show a transformation of layer gneisses due to the beginning anatexis, whereby there are structural changes due to the dissolution of the parallel texture. Further information can be found in the village. A small quarry on the Kehre (in the east), which has now completely overgrown, previously opened up a granite passage.	6000 600 × 10	Type: Rock Type: Cordierite-Sillimanite-Gneiss, Gneiss	embankment	significant	Landscape protection area, nature park
Former quarry on Kirchenberg N of Pilgramsberg	more pictures	278A004	Rattiszell position	Front Bavarian Forest	In the former quarry there is medium-grain granodiorite with partially flat mineral regulation. The granodiorite contains sharply defined clods of various other rocks: e.g. B. Biotite plagioclase ribbon gneiss, large potash feldspar crystals, quartz mica diorite. Some of the inclusions are rotated. The quarry is part of the Pilgramsberg adventure trail. (Geological corner table with explanations on granite and gneiss).	600 40 × 15	Type: Rock Type: Granodiorite, Anatexite	Quarry	significant	Landscape protection area, nature park
Former quarry near Espern	more pictures	278A005	Niederwinkling position	Front Bavarian Forest	The heavily overgrown abandoned quarry is located on the south side of the Welchenberg in the area of a Pleistocene slope of the Danube. Pearl gneiss is pending in the quarry, which is hardly mylonitized despite the proximity of the Danube marginal fault. There are deposits of carbonates and calcareous silicate horn rocks. Quartz blocks with large quartz crystals (streaking of the hypidiomorphically grown crystals) at the bottom are evidence of the degradation of a pegmatoid duct rock.	1600 80 × 20	Type: Rock, Minerals Type: Gneiss, Vein quartz	Quarry	significant	Landscape protection area, nature park
Quarry N of Anning	more pictures	278A006	Bow position	Front Bavarian Forest	In the partially filled quarry there are tectonically heavily stressed gneisses in the area of the Danube rim fracture . Here the pearl gneiss is largely mylonitized and converted into vintner gneiss. On the quarry wall, folds can be seen in the dm area. Further evidence of the tectonic stress: strong fissures, armor surfaces, sheared areas.	600 20 × 30	Type: rock type, fault type: gneiss, mylonite	Quarry	significant	Landscape protection area, nature park
Quartz exposure W from Steinach Castle	more pictures	278A007	Steinach position	Front Bavarian Forest	On the northwest side of the main building there is quartz and mylonite from a secondary pile. This locality is one of the rare places in the Upper Bavarian Forest where stake quartz (secondary stake) is exposed.	250 25 × 10	Type: Rock type, Fault type: Vein quartz	Slope crack / rock wall	significant	Natural park
Former quarry on Buchberg SW of Münster	more pictures	278A008	Steinach position	Dungau	In the former quarry, karst limestone from the Voglarn Formation (Lower White Jura) is located, which was raised as a clod on a staggered quarry in the course of the Danube rim fault. In the karst cavities of the White Jurassic Limestone, rocks from the Cretaceous period ( protective rock formation ) have been preserved. These Mesozoic rocks are covered by a Worm Ice Age solifluction cover with densely packed gravel. The quarry is located in the fenced area of a water intake and has since grown over a lot.	1200 60 × 20	Type: Layer sequence Type: Limestone, sandstone	Quarry	especially valuable	Nature reserve, FFH area, nature park
Quarry on the southern slope of the Helmberg SE von Wiedenhof	more pictures	278A009	Steinach position	Dungau	The former covering of the crystalline rocks of the Bavarian Forest by sedimentary rocks from the Mesozoic era can only be proven in a few places. The quarry on Helmberg is one of the very rare occurrences. Rocks from the White Jurassic and those from the Cretaceous period have been developed here above the crystalline. The latter can be found in the form of the protective rock formation in karst crevices of the intensely karstified lower Weißjura (Voglarn formation). The marly Jurassic limestones are rich in fossils (e.g. cup sponges). The occurrence owes its existence to the Danube rim fault, which has brought it into its current position.	1250 50 × 25	Type: Standard / Reference Profile Type: Limestone, Sandstone	Quarry	especially valuable	Nature reserve, landscape protection area, FFH area
Former quarry on Helmberg SW von Steinach		278A012	Steinach position	Dungau	The carbonate to clayey bound sandstones of the Sandbach Formation prove that in the Upper Cretaceous the area of today's Bavarian Forest was at least marginally under marine cover. Note: since the correct entry of the Sandbach Formation in the geological designation in the BIS is currently not possible, the incorrect classification of lumpy sand is used as a placeholder until further notice (Pürner: April 27, 2015)	200 40 × 5	Type: Rock Type: Limestone	Quarry	precious	Nature reserve, landscape protection area, FFH area
Former granite quarry SE from Siegersdorf		278A017	Rattenberg position	Front Bavarian Forest	The granite that was formerly mined in this small quarry (heavily overgrown) has changed in texture and mineral stock due to a side pile fault. B. the biotites are clearly arranged in parallel. In the vicinity there is an overgrown stream of granite blocks naturally broken by the frost blast in the Pleistocene, as well as numerous artificially broken blocks. In comparison, the round edges of the old blocks stand out against the sharp edges of the young ones.	1250 50 × 25	Type: Rock Type: Granite	Quarry	significant	Landscape protection area, nature park
Gravel pits NW of Perkam	more pictures	278A018	Perkam position	Dungau	In the gravel pits, high terrace gravel is exposed on the edge of the Straubing Plain (Pleistocene Danube Valley). Not far from the pits, the edge of the terrace runs to the younger gravel of the valley of the Kleine Laber. The pit wall shows crystalline gravel (high proportion of quartz) and fine-grained intermediate layers with numerous sediment structures and iron and manganese precipitates.	10000 200 × 50	Type: sequence of layers, sediment structures Type: gravel, crushed stone, sand	Gravel pit / sand pit	precious	no protected area
Quarry NW of Pfelling	more pictures	278A019	Bow position	Front Bavarian Forest	In the small abandoned quarry between Pfelling and Anning, pearl gneisses are pending, which are strongly tectonically overprinted due to their position in the area of the Danube rim fault. The strong disruption of the rock is noticeable, and fold structures can sometimes be recognized. The quarry was cleared in 2008/2009.	5000 100 × 50	Type: rock type, fold / hollow / saddle type: biotite-plagioclase-gneiss	Quarry	precious	Landscape protection area, nature park
High terrace E of Einhausen		278R001	Atting position	Dungau	The striking terrace step of the cracked glacial Danube gravel of the high terrace to the young gravel of the lower terrace and the sediments of the valley floodplain form a striking feature of the terrain. The high terrace is covered by loess loam.	26000 650 × 40	Type: Terrace Type: Gravel	no information	significant	no protected area
Dune S of sand	more pictures	278R004	Aiterhofen position	Dungau	Flat, wooded dune ridge made from fine to medium sand. Only a part of the former dune body is a protected landscape component. The rest of the area is used for agriculture and has changed significantly. The small sand ridges in front of the fenced and protected area are artificial.	25000 250 × 100	Type: Dune Type: Sand	no information	significant	Landscape component
Bogenberg S by Bogen	more pictures	278R005	Bow position	Dungau	The steep slopes on the south and east sides of the Bogenberg, which protrudes prominently over the Danube plain, are Pleistocene (Worm times) Danube impact slopes. The plateau corresponds to the Upper Miocene trunk surface. On the S-side, vintner rock, from which the Bogenberg consists, is exposed in cliffs. This is to diaphtoritische Blastomylonite involved in the fault zone of the Danube border breach occur. The structure shows pronounced breaking and transformation of the rock components.	600000 1200 × 500	Type: slope, rock type, fault type: mylonite, gneiss	Slope crack / rock wall	precious	Nature reserve, FFH area, nature park	Bavaria's most beautiful geotopes No. 96
Teufelsfelsen S from Mitterfels	more pictures	278R006	Mitterfels position	Front Bavarian Forest	Summit cliffs made of pearl gneiss on a small rock spur below the castle. The rocks show wool sack weathering through which the predominant direction of foliation of the gneiss is carved out.	200 20 × 10	Type: Ridge Type: Gneiss	Slope crack / rock wall	significant	Landscape protection area, nature park
Grotto SE von Wiesenfelden	more pictures	278R007	Wiesenfelden position	Regensburg Forest	The Wiesenfelden grotto is a small granite rock dome with a sacred image in a brick niche on the top block. The medium-grain granite with large potassium feldspar crystals shows wool sack weathering. Below the rocky dome on the road there is an approx. 40 m long underground cavern (built in 1838), the former ice storage cellar of the local brewery, beautiful outcrops of granite with gangue rocks and many adjoining rocks (bring a torch).	50 10 × 5	Type: wool sack formation, rocky dome, rock type: granite	Slope crack / rock wall	significant	Natural park
Summit of the Bernhardsnagel S from Oberbocksberg	more pictures	278R008	Rattenberg position	Front Bavarian Forest	In the summit area of the Bernhardsnagel there are numerous rock cliffs made of anatectic granodiorite, some of which form beautiful flat- and mattress-shaped wool sack bodies. In addition to the cliffs, block fields (overgrown) testify to the Pleistocene erosion and weathering (rock cliffs, block decomposition by frost blasting in the Pleistocene). The summit of the Bernhardsnagel, which used to offer a good view, is now completely covered with trees.	40000 200 × 200	Type: rock wall / slope, rock type, block flow type: anatexite, granodiorite	Slope crack / rock wall	significant	Landscape protection area, nature park
Teufelsmühle SE from Oberstein	more pictures	278R009	Rattenberg position	Front Bavarian Forest	The Teufelsmühle (also called Teufelsstein) is a wall-like, double-towered summit cliff made of granite with wool sack and mattress weathering. In sections with narrow fissures, the rock is weathered like a honeycomb. At the foot of the south cliff, an anatectic gneiss clod penetrated by a pegmatite dike is preserved in the granite.	60 15 × 4	Type: rock tower / needle, wool sack formation, sea of blocks Type: granite	Slope crack / rock wall	significant	Landscape protection area, nature park
Sea of blocks on the Käsplatte SE from Hauswiese	more pictures	278R010	Sankt Englmar position	Front Bavarian Forest	The slope areas in the north-west of the summit are occupied by a large sea of boulders. During the Pleistocene, frost weathering in the periglacial area led to the breaking up of the granite rock of the summit into blocks and the formation of the pronounced block sea. The blocks are made of medium-grain granite with potash feldspar sprinkles. In the E of the Käsplatte (Hanichelriegel), paragranodiorite with weak layers forms a summit cliff (wool sack weathering) and a block flow.	60000 300 × 200	Type: Boulder sea, boulder stream, rock dome, rock type: Granite, anatexite	Rock slope / cliff	significant	Landscape protection area, nature park
Gneiss summit cliffs of the Hirschenstein SE from Rettenbach	more pictures	278R011	Schwarzach position	Front Bavarian Forest	Several striking gneiss cliffs protrude from the flat summit plateau. On the southernmost there is an observation tower (good visibility). The cliffs open up a wide range of typical gneiss structures, which can also be seen well on weathered rock sections: layered structures, folds, inclusions of foreign rock with discordant foliation directions, rotated inclusions (cm - 0.5m) and boudins (conspicuous oval cuts). The gneisses (pearl and layer gneisses) partially contain garnet.	5000 100 × 50	Type: rocky dome, type of rock, metamorphic structure, mineral type: gneiss, calcium silicate rock	Rock slope / cliff	significant	Landscape protection area, FFH area, nature park
Meander loop of the Kleine Laaber NW from Perkam	more pictures	278R012	Perkam position	Dungau	The Kleine Laaber has almost retained its natural course in many places. This pronounced river meander is a characteristic example of the numerous river loops of the Kleine Laaber. At this point in the Laabertal valley, on the left side of the valley, a stepped terrace can be seen between various old ice-age river gravel bodies. Whether a river meanders depends, among other things, on the water flow, the river gradient and the amount of sediment in the water.	5000 100 × 50	Type: Meander, stream / river course Type: silt, sand, gravel	no information	significant	no protected area