Hi Nigel
Dr Banisters ??? Still not sure…..
Dr. Banisters is the first, large pool you come to if you enter at the very top of the system. There is a single P bolt for a handline above.
Then Went to is it Birkwith area?
Yep - Birkwith.
OLD ING {Is this the one over the gate up the hill?}
Go through the gate and walk along the track and around that back of the small hill. It's an odd little scar in the ground that you walk in to, but is barely noticeable until you are on top of it.
At the ‘end’ of Old Ing [ Dive line/sump?]........ My friend tells me there’s a very thin, dry route/ squeeze through, up high in the passage? ->i.e. through into further passage i.e. beyond the dive line. …………….without (can it be? ) ‘free diving’ into the sump? (Not that I’ll ever be trying either LOL).
Correct. Just after the obvious bend and chamber at the start of the final rift that leads to the sump, thrutch up into the roof and there's a very well-worn and shiny passage. I've never been along it, but this is the one you want.
Old Ing On the way up to the entrance on the RHS of the track . Pete spotted a hole (plastic pipe covered with a manhole cover) does this connect up with Old Ing too or Birkwith?
Yes - it's the cave between the two. You dive the sumps in Old Ing (making sure you take the correct turning), then emerge in Dismal Hill. Have a look at some of the surveys on
www.cavemaps.org, such as
this one