613 Cueva de Torcida (Fat Boy GT)
Cobadal VN4808(5)9821(9) Alt. 182m  Length 467m Depth 20m

Updated 25th May 2003

An obvious entrance in a cliff near to the sink leads immediately to a 2m high phreatic tube. The right hand branch goes for about 30m and closes down in a narrow rift which contains an inlet but chokes. A small tube just before the rift can be pushed for 10m. This continues but is too tight at a sandy dig.

The left hand branch continues to a breakdown on Orbitolina beds. Just prior to this, on the right, is a phreatic rift/oxbow to the head of a descending tube to the head of a 5m drop onto blocks. The slope leads to a traverse and climb on the right which leads to another parallel shaft with an inlet above. The shaft may continue but it is about the same drop as the previous shaft.

The continuation of the main passage over the Orbitolina collapse enters a crawl and a squeeze down to a flat-out section and then easier going. A cross rift on the right leads to a sand climb and the head of a 10m pitch which needs descending.

Further on, past another (undescended?) drop on the right, a chamber is entered after much calcite. The chamber is about 10m across and contains large boulders and holes in the floor. At the far side a rift may be followed for about 30m to a choke with an inlet cascading down through a roof collapse and a draught blowing in. There appears to be no way on.

Before the chamber, a low level route zig-zags down through bouldery tubes and rifts and ends with a climb into a blind pit with an inlet. This may be glimpsed from the chamber above.

A climb above the final drop into the blind pit enters a rift which arrives at a small, sandy chamber. Down through a low sandy slope enters a small rift which continues for some 60m to a fault. The left hand route continues a short distance to a choke, over drops which are too tight. The right hand route immediately gains an awkward, tight climb into a phreatic chamber. A 10m drop can be seen through possibly diggable boulders which lands in a possible chamber. The draught is being sucked down into it.

References: anon., 1986 (logbook); material in file; anon., 1993c (Easter logbook); anon., 2003b (Easter logbook)
Entrance picture :

Digital photos by Terry Whitaker. The third picture is a hole 30m to the east.

Underground picture(s):

Digital pictures by Steve Martin (A1) and Terry Whitaker A2, D2: entrance A1, A3, C1, C2: main passage B1: First stoop B2, B3 Passage back to large chamber C3, D2: Passage of right of entrance
	1	2	3
A
B
C
D

Detailed Survey :
Line Survey :
On area survey : pdf file with Woodcutters', Snottite and Orchard Caves
Survex file :