1772: CR-8, Sima
San Miguel 30T 456248 4796361 (Datum: ETRS89. Accuracy code: M) Altitude 392m (400m)
Length 15m Depth 15m
Area position : Logbook search

This site is described on the web site of the Sociedad Espeleológica Alto Duero who have explored it. It would appear that the entrance has been located with GPS but the altitude (in brackets above) is wrong when plotted on 1:5000 maps.

A single pitch of 15m entered through a 1 x 1m aperture.

Reference: SEAD website; file
Entrance picture: on the SEAD website
Underground picture(s):
Detailed survey:  elevation on the SEAD website
Line survey:
On area survey:
Survex file:

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