Tresviso Caves Project

Tresviso Caves Project Gazetter

T516: Cueva de la Cabeza de Vaca

(Cowshead Cavern, Cueva el Agua en Sobra, Cheese Cave, Ogof Pen Y Buwch)

East, North:362314, 4790563 (nearby)
Coordinate Quality:Uncertain
Long, Lat:-4.6962492198899, 43.255273752644 (map)
Elevation (m):894
Length (m):3000
Depth (m):54
Active Lead:
Survey Available:


In the Sobra Valley, follow the main down into the valley, as if heading towards Cueva del Marniosa. Just before Marniosa, where the track splits, take the left hand track down to the obvious cabanas in a clearing. Turn east and head back down the valley (as if returning to Tresviso). The path leads down through a stream to an obvious resurgence on the left. The cave is located on the northern side of the Sobra Valley and would appear to be a resurgence for caves on the western end of the Tresura range


Small resurgence. Entrance chamber splits. Right is locked cheesed cave and left is Cowshead Cavern.


 The passage follows the stream upstream in walking passage, until the roof lowers.   A little way back a crawl on the right and up is the way on, into a small loose boulder choke.  Continuing straight on and up into another boulder choke.
From the chamber right leads to a few small climbs up and down and the skeleton of a bear (Ursus Spelaeus - 2018). Originally thought to be a cowshead skeleton (hence name of cave)
Back a the chamber, left leads over some climbs and then down through the boulder choke, back to the streamway.
The streamway continues for around 250m and traversing it requires occassionaly route finding at a high level.
Eventually, an obvious pool is reached, that appears to be the end of the cave.  On the left a tight waterlogged rift can be seen.  The way on is up via a calcited climb that is quite exposed.  At the top a tube leads to a large passage and window overlooking Sump 1.
Sump 1 is 100m (Julian Walker) to a more open stream passage and sump 2.  Sump 2 is 4m long (Rich Barker) and leads to 500m of open stream way and a large end chamber.
The stream enters from a passage some 8m up the wall.  This can be climbed to Sump 3 which is a few meters beyond.  There are a number of small oxbows in the area.
(Unknown, post 1986) - passed 2 more sumps.  6th not passed.  pushed to 3km


  • S.W.C.C. (1986)
  • Puch, Carlos (1996)
  • Daniel Ballesteros 2018 - personal comms. Re: bear skull not a cow
  • Notes

    Alternate co-ords:
  • Puch (1996) 0362500 4791600
  • Speleogroup (2007) 0362259 4790431 849
  • Images

    No images available