1778: M-39, Sima (M39)
Mullir 30T 455548 4795741 (Datum: ETRS89. Accuracy code: M) Altitude 663m (480m)
Length 23m Depth 23m
Area position : Site entrance in context : 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.

An entrance of 5 x 2m is the top of a 23m choked pitch.

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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