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 39 32 2 1 76 FW 0 0 11 7 0 1 19 FG 4 0 40 28 6 0 78 OW 0 0 0 0 0 0 0 sum 5 3 90 67 8 2 175
rock-type FS FB FW FG OW sum limestone, marble 0 1 7 7 0 15 sandstone 2 75 0 0 0 77 granite - - - 68 0 68 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 75 - - - 77 triassic limestone (Muschelkalk) 0 1 - - - 1 upper carbonif. - - 0 68 0 68 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 20 3 0 0 23 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 63 0 77 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 76 0 145 cave ruins 0 8 1 0 0 9 rock shelters 1 15 1 2 0 19 natural bridges 0 2 0 0 0 2
FS FB FW FG OW sum flowing water (incl. stagnant water) 0 24 1 1 0 26 stagnant water (no flowing water) 1 6 2 1 0 10 without water 1 46 16 76 0 139
FS FB FW FG OW sum survey 100 100 100 95 - 98 map 100 80 95 76 - 80 description 100 95 58 64 - 77 photos 50 70 79 44 - 59 other documentations 50 18 21 0 - 11
FS FB FW FG OW sum mines, minery adits 0 4 31 22 2 59 cellar caves 35 100 13 22 0 170 wells 0 8 15 0 0 23 others 0 1 3 0 0 4 unknown 0 2 1 0 0 3 sum 35 115 63 44 2 259