https://www.geocaching.com/geocache/GC5GA1D_kalktuff-in-der-alten-burg-von-rothenburg-o-d-t
GC5GA1D Kalktuff in der alten Burg von Rothenburg o.d.T. (Earthcache) in Bayern, Germany created by...
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...