Well, after several attempts to find this cave, yesterday I hit the jackpot while searching for the 2nd adit that we couldn't find on the Thursday trip a couple of weeks ago (which I've now found and marked a nearby tree)

The cave is only 30 or so meters away from the adit so who's up for a trip there soon?

The main passage and chamber seem fairly well documented but no-one has documented any exploration of the mined passages that run off the shaft in the floor.