My version of events from above
I had great fun at the top, we established a voice connection but surprisingly the passage opening we could see from the dig face below was not the passage I was in now. So I thought there could be a mid-level passage to get into and maybe even bypass the choke if it did!
I thought it would be easy to get through, but I had to dig out a hell of a lot out to get down to the too small hole to make the opening bigger. This all happened while the overs beavered away below. So I dug and dug, with nothing but a crow-bar and made myself a fantastic little sand/mud pit. Unfortunately my digging efforts often dropped bit of of mud down to the dig below and added more spoil for Chris and co to remove below, as I got deeper I had no choice but to chuck it down the hole below me, with warning of course. Eventually I was through into the void and a connection was made with my welly. The space turned out to be nothing but a filled in shaft with barely enough room to stand. No ways on except a small mud filled tube (even more mud filled now).
I could dig down no further without collapsing the floor onto them, reversing out was interesting, so I made the hole bigger still once out. I called Nick up to look at the end of the passage. While we starting a new dig up there, there was a large crash as the floor I was stood on earlier was now at the bottom of the dig! Once Chris got his composure back I volunteered to make through trip. Going through now was quite easy though thanks to their digging it bells out quite significantly at the bottom. Unfortunately I left my SRT kit on the other side of the hole so Nick got the honour of doing the round trip while I settled for climbing back out. Probably loosening a boulder or two as when Nick went down he took a few down with him Indiana Jones Style!
Round trip description
Note this currently should not be attempted due to the looseness at the bottom of the connection.
From the bottom of the entrance scaffold, turn right to go under a dubiously looking big black block. Follow the scree slope down to a small chamber. A short flat out crawl leads to a slight enlargement before shrinking to a easy sideways crawl which opens out into a dug mud/sand pit. Slither down the pit, where a right angled wriggle brings you into a small chamber with a ledge, climb carefully down as the shaft opens up at the bottom and is currently very loose. Land in mud. Crawl out and into a scaffold stoop and then a step down into more crawling. Soon a pit is reached with a scaff-bar making a bridge. Traverse across this (shitty rope in-situ) to join the normal route down into new Goyden. Up the roped calcite climb leads to higher passage and then the scaffold entrance climb at the start, completing the round trip. Down via knotted rope leads into New Goyden.