I would say it is CM, at about the 2nd light down you can see that Rampgill cut through.
Over on DP somewhere is a video of a winch trip there, its quite entertaining. Not as entertaing as where the club bloke in the bottom got lifted feet 1st up the shaft with his foot snagged by the signal wire! Sadly that bit wasn't video'd, he got about 12 feet up before they un-ceremoniosly dropped him back down again.....