Abbreviations for the areas:
FS: Northern Frankonian Benchland
FB: Frankonian block-faulted area
FW: Frankonian Forest
FG: Fichtel Mountains
OW: Northern Oberpfalz Forest
1 Total lengths of the caves
area unknown < 5 m 5 to 9 m 10 to 49 m 50 to 99 m > 100 m sum FS 1 1 0 0 0 0 2 FB 0 2 40 32 2 1 77 FW 0 0 11 7 0 1 19 FG 4 0 41 28 6 0 79 OW 0 0 0 0 0 0 0 sum 5 3 92 67 8 2 177
rock-type FS FB FW FG OW sum limestone, marble 0 1 7 7 0 15 sandstone 2 76 0 0 0 78 granite - - - 69 0 69 gneiss - - 1 0 0 1 breccia, conglomerate 0 0 8 0 0 8 diabase - - 2 0 0 2 unknown 0 0 1 3 0 4
formation FS FB FW FG OW sum triassic sandstone (Keuper) 2 76 - - - 78 triassic limestone (Muschelkalk) 0 1 - - - 1 upper carbonif. - - 0 69 0 69 lower carbonif. - - 7 0 0 7 upper devonian - - 10 0 0 10 ordovician - - 1 0 0 1 cambrian - - 0 5 0 5 proterozoic - - 0 2 0 2 unknown 0 0 1 3 0 4
FS FB FW FG OW sum karst 0 2 9 7 0 18 physical erosion 0 21 3 0 0 24 tectonic and rift caves 0 13 4 2 0 19 slope rift caves 0 3 0 0 0 3 weathering 1 9 0 1 0 11 boulder caves (in broad sense) 0 14 0 64 0 78 different genetic conditions 0 3 0 0 0 3 others 0 0 0 1 0 1 unknown 1 12 3 4 0 20
FS FB FW FG OW sum caves 1 51 17 77 0 146 cave ruins 0 8 1 0 0 9 rock shelters 1 16 1 2 0 20 natural bridges 0 2 0 0 0 2
FS FB FW FG OW sum flowing water (incl. stagnant water) 0 25 1 1 0 27 stagnant water (no flowing water) 1 6 2 1 0 10 without water 1 46 16 77 0 140
FS FB FW FG OW sum survey 100 100 100 95 - 98 map 100 79 95 80 - 81 description 100 96 58 66 - 79 photos 50 69 79 44 - 59 other documentations 50 18 16 0 - 10
FS FB FW FG OW sum mines, minery adits 0 4 33 23 2 62 cellar caves 35 102 13 23 0 173 wells 0 8 15 0 0 23 others 0 1 3 0 0 4 unknown 0 2 1 0 0 3 sum 35 117 65 46 2 265