One of three strongly draughting holes to the northeast of site 3300 and the Deep Rifts Passage in Torca la Vaca. The others are site 3470 and 3472.
This has a strong, cold draught. At the base of a small limestone cliff a sandy tube going off to the left stops but the draught seems to come from a fist-sized hole in the boulder floor. Worth digging but will be hard work - possibly a DCC project.

Reference: anon., 2010c (summer logbook); Corrin Juan, 2011
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