Tresviso Caves Project

Tresviso Caves Project Gazetter

T91: Lower White House Mine

(Vacas, Emilio)

Area:Mazarrasa Mines
East, North:360872, 4786012 (nearby)
Coordinate Quality:GPS
Long, Lat:-4.7128584869215, 43.214046268132 (map)
Elevation (m):1711
Length (m):1116
Depth (m):-80
System:Sistema Ramazosa
Active Lead:
Survey Available:


Obvious mine entrance 50m from Caseton de Andara


Obvious mine entrance 50m from Caseton de Andara.

Locked (2014)


This is the lower entrance to the extensive mine system collectively called Sistema Ramazosa which includes a lot of natural development. The mines RCA6, T105 Italianos, T144 Rosario and (possibly) FT39 Pozo del Compromisso link through to this level of the mine, all coming down from the Lake Depression and the Mazarassa mine area.

From the T91 level a number of natural and mined workings continue down and these include the Spiral Staircase, the RCA6 lower level, T91A Torca Boulderosa and the area beyond the Aerial Walkway.

For descriptions of RCA6 and T91A Torca Boulderosa see the respective entires in the database

Beyond the Aerial Walkway.

From the T91 entrance by continue straight along the mine level (Las Vacas). (20m inside the mine the way is now blocked by a metal door, beyond which cheese is stored by the Caseton Andara staff. This can be opened with agreement). The passage continues to a dam and forks. The right hand fork continues across a wooden floor, dangerous walkways and numerous collapses. Traversing over the wooden beams reaches a third collapse. Here it is possible to descend a 10m pitch to a lower, large ledge and then climb back up to the other side of the collapse. Soon afterwards on the left is a natural shaft (best descended through an eyehole round to the right). A 17m pitch leads to a traverse over a wooden platform and a 25m pitch in a mined rift. The rift continues to a choke.


L.U.S.S (1974-1977)