https://www.geocaching.com/geocache/GC54TFP_marmorbruch-am-krockstein
GC54TFP Marmorbruch am Krockstein (Earthcache) in Sachsen-Anhalt, Germany created by Nine&Dido
Geocaching is a treasure hunting game where you use a GPS to hide and seek containers with other participants in the activity. Geocaching.com is the listing...