Entrance pitch  -  40m to ledge, further 50m to bottom

Follow passage via 10m and 20m pitches to awkward meander.  Over top and down to

P75: 10m to ledge, 65m to base.

Follow passage to where it enters a large gallery, Ruisseau Des Grenoblois.  Turn right at junction and follow gallery which leads after pitches of 10m, 10m (climb-up, rope insitu 1988), 35m(beware - loose boulders) and 45m to

Salle Des Rhomboedres:

From the base of the last pitch the way is down and to the right into a small, dry meander which rapidly leads to

Puits Des Echos: 6m to large ledge, 20m to large ledge, 50m to base.

From base of pitch way on is to right (facing pitch).  Down through boulders (awkward) across short, muddy traverse to head of 25m pitch which drops into a streamway.

Follow streamway via free-climbable pitches of 5m, 7m and 7m and rope pitches of 8m, 30m, 12m to eventualy emerge at

Riviere De La Diau:
Way out is downstream to large boulder strewn passage.  Cross this to rejoin river. Follow passage via numerous fixed wires round lakes to where stream turns left into lake with no fixed wires (leads to sump).  At bend follow walking passage with slippy moonmilk floor to a rift leading up and left (stempled).  Follow strong draught and bear to the right to a fixed ladder (in-situ 1988) down to rejoin main passage.   Downstream to head of cascade.  Way on is up and to left into large phreatic passage near a water depth marker.  Follow marked route through passage to a fixed ladder (in situ 1988) down to a short traverse (wired) and a further fixed ladder.   Follow passage down to an awkward, fixed wire ladder.  Down this and short climb (a lake may form at this point - if so follow fixed wire at higher level) leads to a boulder strewn chamber.  Follow marked route across this to Grotte De La Diau entrance.

Copyright   © P Vale, 1988 & 2001