Major Sump is a large vein cavity that is full of silt. Above Major Sump, the passage just ended but due to the presence of the sump, it wasn't possible to see if there was any opportunities for further exploration beyond so it needed bolting. So during Nov and early Dec 2011; Henry Rockcliffe, Rostam Namaghiset and Tom Smith of Sheffield University Speleological Society (SUSS) bolt traversed across the right hand wall and found there was no way on but at least it has now been ticked off.

For more info about the actual trip, see: SUSS Website

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