There are two ways on in the chamber floor. Facing away from the pitch
'BEN' series is left, down through the boulders, whilst a small opening
on the right leads to 'BILL' series.
BEN Series:
After the climb down, a short crawl leads to a low chamber. Here a
passage on the right leads back to the Bill series. Straight on a
short crawl soon breaks out at the head of the second pitch, 'Teddy's'
34m. The pitch drops into a narrow rift, which if followed up widens to
the smooth floor of an aven, whilst a short climb down in the rift,
followed by a further climb leads to wider passage at the top of the
third pitch. This 28 free hanging pitch is followed immediately by two
further pitches 15 and 9m, the latter of which drops into the 'Rock
Garden'. The Rock Garden i6 a collapse chamber on a major cross rift.
Thrutching down amongst boulders in the far left hand corner of the
chamber leads to an overhanging boulder sloPe reouirinz 15m of rope.
A short section of tortuous passage at the base of this pitch opens
out at the head of a 10m deep, hading rift, which at the bottom becomes
too tight to follow.
The passage branching from the right hand corner of the Rock Garden is the Little Weed rift - best negotiated by traversing 5m above the floor. Little Weed ends at a constricted 5m pitch that is followed almost immediately by the sixth pitch - 16m and the start of the second, large rift section. E e wide passage again closes to an awkward take-off in the rift for another 16m pitch, and a further short traverse to the 'Paso dela Ovejas que come Nesquik', (a small chamber above an 8m pitch). A climb down over boulders, and through another short awkward rifts onto large boulder blocks, leads to a wide high rift. A traverse forward and up, as the rift deepens and widens leads to a corner near roof level, and to the natural belays for P28. There are some-beautiful white stalactites just below the take-off. P28 is a spacious pitch landing on a ledge 5m above a large pool. E e stream sumps here, in both upstream and downstream directions.
Traversing over the downstream sump in a low rift passage, and down again to stream level, leads to a climb down with the stream. Here the rift continues high, while at stream level it is very awkward. Traversing and climbing close to roof level affords the easiest going along the meandering and increasingly muddy rift, until the lip of an estimated 40m shaft is reached. here the rock is brittle and unsafe, so 30m back from the shaft it is possible to descend the rift to regain the stream at the head of Pozo Duro; 8m. Following almost immediately is Pozo Critico; 25m which is flanked with clean white limestone and has a large smooth rock floor below, which is used as a bivi site.
Once again the continuation is in a meandering rift, near stream level. The rock is brittle and shaley in parts, with a few awkward sections prior to P4, which lands in a pool with a sand bank to one side. A traverse above the stream leads through sandy, dry, phreatic passage to the first of the two squeezes. The first of the squeeze does not offer much difficulty whilst the second, approximately 50m further along can prove very awkward with tackle. This section of the cave is aptly named 'The Autopista Sangrienta' (Bloody Highway), and was first pushed with the aid of a lumphammer.
The rift passage widens again, and then leads to a section of collapse necessitating a climb over a large boulders and a traverse across a few more. A short sandy passage and a 4.5m pitch enter another deep meandering rift. Staying near roof level, above a deep trench in the flour, leads to the head of P54. The take-off for the pitch is just below a large fallen block jammed in the rift. This magnificent shaft is called Pozo del Comepiedra (Pitch of the Stone Eater). The shaft is large at the top and widens to impressive proportions, and must be the best pitch in the cave.
The shaft drops onto a huge sloping ramp, which drops over a pitch onto an equally large boulder ramp, to yet another pitch. The water follows the rift down, and flows down one side of the ramp now almost insignificant against the brown coloured boulders.
At the end of the ramp the huge passage closes down completely, the stream dropping away into a hole amongst the large blocks. A short climb up into a narrow rift leading off, gives access to the next shaft, Pozo Flobalop 51m, dropping down to a large pool, the stream is rejoined here, as it drops down an adjacent shaft.
The water falls down the side of a hading rift to a pool, from which point the stream flows to the right into an impenetrable crack. Ihe way on is above the hading rift, to a short meander leading to an awkward take-off for a small, broken, dry pitch, followed by P17. A narrow rift is followed at stream level, to the start of Pozo Slugalug.
Pozo Slugalug is a 116m, spray filled, shaft that drops in a series of short ropes to a boulder strewn ledge. Three short pitches follow in quick succesgion to a passage with prominent phreatic pockets in the roof. The final sump is 2m in diameter with signs of backing up, 1 - 2 metres above the water 1evel.
BILL Series:
The small opening leads to a chamber with a sloping floor. Down
to the left leads back to BEN series, whilst a 3m climb down at the
bottom end of the chamber leads to a 22m pitch. A small passage
leads to a pitch of 7m into a small chamber, with a minor inlet,
and straight onto the head of a 40m pitch. At the bottom is another
small inlet, and the stream flows into a fissure. Traverse over,
to a 10m pitch followed by a 22m pitch - 'Puit Technique Francais'.
In the chamber at the bottom, the water flows down into an inclined
fissure, which can be followed for 30m before becoming too tight. No way on.
