I'm still intrigued about the large natural passage we got into last year in Hillocks that descended well below floor-level to a short coffin level into a chamber with a large pool in it. No idea if it is a pool or a sump, but it didn't look like it went far. It may be on the Survex model as there is something going downwards roughly in the right place, but I'm sure we went further than the survey suggests. It's reached by walking through the 'bottle' passage from the engine shaft, and then when you reach the next large chamber, instead of following the passages left or right, climb straight up the mud/rubble slope immediately in front of you - at top left is the entrance to this natural passage, which slopes downwards again, but there is other natural around there. Just wondering if anyone's pushed this area in recent times?