We had 3 things to look at today.
First we looked at a few of the question marks immidiately on the otherside of the canyon. Both led back into the main passage so they were ticked off. The aven here looked to have big space at the top, so worth climbing.
The second thing we looked at was the drafting boulder choke. We could tell it had been looked at a lot before with foot prints everywhere, there was even a rope hanging down a slippery horrible climb. We figured if there's a rope hanging down that then it all would have been looked at, so we poked about elsewhere. We eventually found our way through the boulderchoke to where the main passage just ended rather suddenly at a sand choke. We think the drawn survey is a little wrong as it should be more of a turn, if they don't match as suggested by the survey.
The third thing we were to look at was a possible shortcut connection. Only issue is Phil forgot to mention to us an 8m pitch (Man Trap) and as we had neither rope or SRT kits we could go no further. However a passage simply marked as climb looks promising, it may bypass the pitch but the bottom 2m is in open space and will need a ladder. Should go back and survey it.