Longest geotopes

As of 2026-10-12, Riesending cave tops the list with 19,500 m.

1. #1 Riesending cave — 19,500 m

   pit cave

   The Riesending Cave is a pit cave in the Untersberg near Berchtesgaden, Germany, and Salzburg, Austria. At 1,148 m it is the deepest and at 19,300 m the longest cave in Germany. It was discovered in 1996. In June 2014 it became well known because of a large effort to rescue a lead speleologist. Read more on Wikipedia.

   Wikidata
2. #2 Kaiserstuhl — 16,000 m

   low mountain range in Germany

   The Kaiserstuhl is a range of hills in the state of Baden-Württemberg in southwest Germany with a maximum height of 556.6 metres (1,826 ft). It is of volcanic origin and located in the southwest of the state in the counties of Emmendingen and Breisgau-Hochschwarzwald. In terms of natural regions it is considered to be a part of the Upper Rhine Plain. Read more on Wikipedia.

   Wikidata
3. #3 Eberfinger Drumlinfeld — 12,000 m

   drumlin in Germany

   source Wikidata
4. #4 Hölloch — 11,346 m

   pit cave in the Allgäu Alps in Bavaria, Germany

   source Wikidata
5. #5 Bamberger Sandsteinstollen — 11,000 m

   Geotop in Landkreis Bamberg (Stadt) in Bavaria, Germany

   source Wikidata
6. #6 Drumlinfeld SW von Oberreitnau — 10,000 m

   Geotop in Landkreis Lindau (Bodensee) in Bavaria, Germany

   source Wikidata
7. #7 Salzgrabenhöhle — 9,012 m

   cave in Germany

   source Wikidata
8. #8 Wellheimer Trockental — 9,000 m

   valley in Germany

   source Wikidata
9. #9 Drumlinlandschaft SE von Vogtareuth — 9,000 m

   Geotop in Landkreis Rosenheim in Bavaria, Germany

   source Wikidata
10. #10 Ehemaliger Prallhang S von Obergünzburg — 8,700 m

    Geotop in Landkreis Ostallgäu in Bavaria, Germany

    source Wikidata