It is located in the northern part of the Sauerland at Iserlohn (Grüne district).

The workers dropped a hammer into a rock crevice which turned out to be the entrance to a dripstone cave when they were searching for the lost tool.

The cave is named after Oberberghauptmann Heinrich von Dechen (1800–1889), in recognition of his contribution to researching the geology of the Rhineland and Westphalia.

Because the cave was found and owned by the railway, a halt was built next to the visitors' entrance.

Today, the Ruhr-Lenne-Express (RE16) and Ruhr-Sieg-Bahn (RB91) services stop at the halt.