T47b: |
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Approach | |
150m east of T47, El Monte de Valdediezmo, above the Sobra valley. Walk up the Sobra valley past the dam until you reach a terrace of three cabanas on the north side. Climb up the slope opposite these on the southern side of the valley for about 400m. |
Entrance | |
20m deep shakehole |
Description | |
One of two shake holes approximately 20m. Deep which is draughting slightly, but was not descended
2012 - This is approx., 300m horizontal from the 80m aven beyond sump 1 in Marniosa (although 400m higher) |
Reference | |
L.U.S.S. (1974-1977) |
Images | |
No images available |