Not been down Thrupe lane for some time so decided to give it a go on this particularly busy mendip weekend. Route-finding was no real problem thanks to excellent description from Mike Wilson. Down to Atlas pot, the descent of which was on very dodgy worn out bolts and under a lot of water. Followed the passage ata the bottom to the sump before returning.
Aim of the trip was to dive sump 2. We went to sump 2 via the standard tourist route (apart from Crispin & Kev who went down pulpit pitch). Once at sump 2 I dived on a base fed line through into a small flooded chamber, airspace could be seen but not reached, from here I went feet first down a 45degree descending tube that was partially full of very fine silt (Sand). This soon pinched to a close and a return was made.
Exploration dive into Sump 2 with a base fed line. Entered a small chamber after a few meters then descended feet first down a 45 degree tight tube for about 1-2m. The floor was a mixture of soft mud, sand and gravel. The roof was solid rock. further progress could be made here through digging.