Tunnels

May 14, 2020
OKM Glossary

Tunnels are artificial underground passages, especially built through a hill or under a building, road or river.

The connecting passages serve, for example, as access to special rooms or as secret escape tunnels. With the discovery of tunnels, a piece of history of building complexes can be reconstructed and treasure troves can be discovered.

Cavity Detection

Experience adventure, fascination and history: Cavity Detection with the appropriate detector goes beyond treasure hunting. Discover lost places and hidden ...
May 14, 2020
Caves are excellent hiding places for valuable artifacts or for thieves' prey that can be rediscovered with detectors.

Caves

Caves are naturally formed or man-made cavities in hills or cliffs and serve as excellent hiding places for valuable artifacts ...
May 14, 2020
Catacombs

Catacombs

Catacombs and underground cemeteries are subterranean galleries with recesses for tombs that can be found in ancient Rome and Jerusalem.
May 14, 2020
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