3511: depression
Bosmartín 30T 449657 4797378 (Datum: ETRS89. Accuracy code: G) Altitude 497m
Depth 4m
Area position

A mud floored, 7m diameter and 4m deep depression with an elder tree in the middle.

Reference: anon., 2011b (Easter logbook)
Entrance picture: yes
Underground pictures :
Video :
Detailed Survey :
Line Survey :
On area survey :
Survex file :