List of geotopes in the Rottal-Inn district

This list contains 21 geotopes in the Lower Bavarian district of Rottal-Inn 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
Hinterholz mussel shell mine		277A001	Simbach am Inn position	Isar-Inn hill country	The aboveground and underground outcrops on the Antersdorfer Bach near the former Hinterholz mussel schill mine are the type locality of the Schill horizon of the oncophora layers (brackish water molasses). The Schillhorizont was mined in many small chicken feed mines between 1913 and 1965. The shell fragments were washed and used as a chicken feed supplement to improve the shell formation of the eggs. The up to 40 cm thick Schill horizon consists mainly of mussel shells. It serves as a guide horizon and separates the flour sands from the mica sands. The outcrops have collapsed a bit.	100 20 × 5	Type: Type locality, Animal fossils, Layer sequence Type: Sand	Gravel pit / sand pit	especially valuable	no protected area
Former gravel pit near Kraham S von Johanniskirchen		277A009	Johanniskirchen position	Isar-Inn hill country	In the gravel pit, which is now abandoned, weathered gravel was mined earlier, which, unlike the northern full gravel, is completely decalcified, but which, unlike the residual quartz gravel, still contains crumbly crystalline oil and pebbly sediments (Steinebacher facies). The northern full gravel can easily be recognized as the starting material. The outcrop areas that have remained after the end of the dismantling and have not yet collapsed are difficult to access.	65 65 × 1	Type: Rock Type: Gravel	Quarry	significant	no protected area
Former sand pit in Lugenz ENE von Birnbach		277A010	Bad Birnbach position	Isar-Inn hill country	Under the upper edge of the former gravel pit lies an approx. 1.5 m thick quartz conglomerate. This is widespread in the region and gave rise to the Lugens plateau.	240 80 × 3	Type: Rock type, Fossil soil Type: Quartz conglomerate, gravel	Gravel pit / sand pit	significant	no protected area
Gravel pit NE of Amsham		277A011	Egglham position	Isar-Inn hill country	In the gravel pit, first loess loam and then the approximately 1–2 m thick quartz conglomerate horizon is exposed (broken into individual blocks). Below this are the gravel of the residual quartz gravel. Gravel horizons and sandy layers show a narrow alternation. Iron and manganese hydroxide were excreted to varying degrees. The upper area of the gravel body is brownish and yellowish in color, while the lower meters appear strikingly light.	1000 50 × 20	Type: Layer sequence Type: Quartz conglomerate, gravel	Gravel pit / sand pit	precious	no protected area
Hohlweg NW of Dötling		277A013	Simbach am Inn position	Isar-Inn hill country	The imposing ravine, with steep walls up to 5 m high, opens up a profile through the Oncophora layers, sediments of the brackish water molasse. The lower part lies in flour sands (at least 8 m thick). Shortly after the path turns to S, you can see the mussel shell horizon (1 - 2 dm), followed by at least 10 m of mica sand. At the edge of the forest SE of the ravine, the underlying marl of the Upper Sea Molasse are cut on a slope crack (next to a tiled storage area).	2000 500 × 4	Type: Layer sequence, rock type, ravine, animal fossils Type: sand	Pit / canal / ravine	precious	no protected area
Steghub Muschelschill Mine		277G001	Simbach am Inn position	Isar-Inn hill country	The tunnel in Steghub is evidence of the lively mining activity on limestone dishes in the Simbach area in the first half of the 20th century. In many small mines, the up to 40 cm thick shell horizon was mined from mussel shells from the Oncophora layers (brackish water molasses) for use as an additive for chicken feed. The tunnel mouth hole is partially moored and the entrance route is covered with concrete. After the connected route the tunnel collapsed. A big break in the day above (photo 4) should still be in motion.	9 3 × 3	Type: Studs, Animal Fossils Type: Sand	Tunnel / gallery / shaft	significant	Natural monument
Blockstrom Kaser Steinstube SW from Voglarn	more pictures	277R001	Triftern position	Isar-Inn hill country	The impressive block flow of the Kaser Steinstube begins below the quartz conglomerate horizon, which is broken into large slabs at the edge of the plateau, and stretches down the slope for more than 100 m. A temporary stream flows through it. Some of the quartz conglomerate blocks pile up on top of one another and form small cover caves. The formation of the block flow occurred in the Pleistocene at times of increased erosion and soil flow in the periglacial area.	800 80 × 10	Type: Block Stream Type: Quartz Conglomerate	block	precious	Natural monument	Bavaria's most beautiful geotopes No. 53
Crocodile Rock E from Landerham		277R002	Bad Birnbach position	Isar-Inn hill country	This quartz conglomerate block, which when viewed from the south-east has a crocodile-like shape, forms a landmark that can be seen from afar in an open field. The block is the remainder of a formerly more widespread conglomerate cover and probably slipped from its originally higher location in the Pleistocene within a solifluction cover. As is often the case in the quartz conglomerate bank, the block shows a change in grain size from gravel (conglomerate) to sand (sandstone).	21 7 × 3	Type: Boulder Type: Quartz conglomerate	block	significant	Natural monument
Quartz conglomerate blocks in Unterhitzling		277R003	Bad Birnbach position	Isar-Inn hill country	In Unterhitzling there are several large blocks of quartz conglomerate that represent the remainder of a solifluction ceiling. At the top of the residual quartz gravel, a 1 - 3 m thick quartzitic conglomerate cover formed in the Tertiary. As a result of erosion and outflow of the underlying gravel, the breaking of the quartz conglomerate cover and the sliding of the blocks during the Pleistocene, the blocks are now below the surface on a secondary deposit.	24 6 × 4	Type: Boulder Type: Quartz conglomerate	block	significant	no protected area
Block stream with Hitzlinger Bach N from Unterhitzling		277R004	Bad Birnbach position	Isar-Inn hill country	The meandering stream bed of the Hitzlinger Bach is accompanied by numerous blocks of quartz conglomerate. With stronger water flow, the creek forms small waterfalls at steeper passages. The blocks are evidence of a Pleistocene solifluction cover. The blocks originate from the quartz conglomerate bank that is extinguishing on the upper slope and have reached their current location through erosion and slope sliding. Rinsing out the fine material has exposed the blocks in the stream bed.	4000 200 × 20	Type: Block Stream Type: Quartz Conglomerate	block	significant	no protected area
The Heldenstein boulder near Maierhof N von Simbach		277R005	Simbach am Inn position	Isar-Inn hill country	The Heldenstein is a quartz conglomerate block on a secondary deposit. The transition from quartz conglomerate to quartzitic sandstone can be seen in the rock. The block came to its current location by sliding down the slope. It is the remains of a quartzitic conglomerate cover formed in the Miocene in the top of the residual quartz gravel. The rearrangement occurred mainly during the Pleistocene. The block has been provided with a granite plaque.	9 3 × 3	Type: Boulder Type: Quartz conglomerate	block	significant	Natural monument
Boulder SE from Niedereck		277R006	Simbach am Inn position	Isar-Inn hill country	The large quartz conglomerate block on the western bank of the stream is the remainder of a quartz conglomerate cover still pending in higher elevations. By sliding down the slope, it reached its current position. Quartz conglomerate blocks on secondary deposits are more common in the county. The redistribution took place mainly during the Pleistocene glacial periods through soil flow.	16 4 × 4	Type: Boulder Type: Quartz conglomerate	block	significant	Natural monument
Block stream in the Eckinger Klamm SW from Ecking		277R007	Triftern position	Isar-Inn hill country	At the Eckinger Bach there is a block flow of quartz conglomerate with blocks piled on top of each other in the upper area of the brook. The block current formation took place in the Pleistocene under periglacial conditions. Conglomerate blocks loosened from the bond by frost weathering and erosion slid down into the valley on solifluction ceilings (floor tiles). The exposure occurred through erosion of the fine material in the area of watercourses.	5000 200 × 25	Type: Block Stream, Kerbtal Type: Quartz conglomerate	block	precious	Landscape protection area
Valley with Blockstrom SE from Pelkering		277R008	Triftern position	Isar-Inn hill country	In the area of the ravine-like creek cut, blocks of quartz conglomerate form a block flow. On the upper slope of the valley there is the quartz conglomerate with a 2 m high steep step. As a result of erosion and the flowing out of the underlying quartz gravel, a groove is created which causes further quartz conglomerate blocks to break down and slide off. The block current formation in the Pleistocene periglacial area can thus progress to a lesser extent in recent times.	800 80 × 10	Type: Block Stream, Kerbtal, Rock Type: Quartz conglomerate	block	precious	Landscape protection area