Tresviso Caves Project

Tresviso Caves Project Gazetter



Area:Grajal de Abajo
East, North:360517, 4785247 (nearby)
Coordinate Quality:Uncertain
Long, Lat:-4.7170338838648, 43.207095116934 (map)
Elevation (m):1906
Length (m):35
Depth (m):-20
Active Lead:
Survey Available:


25m above and south of T151


a large natural snow-plugged, crescent shaped shaft


a large natural snow-plugged, crescent shaped shaft.  At the eastern end a climb down behind the snow leads to a large chamber.
A lot of mine debris was held up by rotting beams and the dangerous descending passage down the scree was not followed
Progressed 20m into eastern shaft.  Could see another 20-30m down a scree slope to where the passage narrows to approx. 1m diameter, snow plug minimal.  Rock is loose on walls if used to climb.  Railway sleepers in entrance holding back rocks are sold and stable at this time.
Possible draft, no echo.  Spits found in good condition. Scree slope held up by loose boulders. Cave explored to 3m (approx.) from floor. No way on visible. Draft is probably coming from through the choke.
Descending passage is approx. 20m to 2 3m pitches (spits in place)


L.U.S.S. (1979) (Explored by Kingswood) Tresviso Caves Project 2016


T153 30T 0360517 4785247 1906m Old (converted co-ord) where 0360488 4785289, no altitude


No images available