Cave details
This cave is well known as a showcave (currently called The Devil's Arse), with both main entrances being showcaves, one of which is a mine. The Peak Cavern entrance is the largest in Britain at 31 m x 18 m (though Smoo cave has a larger cross sectional area due to Peak Cavern's entrance being partly filled with sediment), and the Titan Shaft is the highest pitch in Britain, at 141.5 m (or 145 m from the highest point to the lowest, but never rigged that way), all free-hanging. Truly impressive. The large part of Titan above the Event Horizon (at +65 m) is approximately equal in volume to the second largest chamber in Britain. The Speedwell Main Rising is the second deepest sump in Britain, dived to 70.2 m. Several streamways run through both main sections of the cave with avens leading to small muddy passages that connect the two caves. A lengthy sump can be passed to access one section of the lower cave. In the same area is the Peak Streamway which contains one of Britain's finest examples of a phreatic tube.
A mine entrance on the moor above provides a route into the cave bypassing both showcaves. This route contains some impressive artificially enlarged shafts, and the through trip from here to the Peak Cavern Resurgence entrance is 240 m, of which the first 50 m+ of depth in this route is mined, and not enlarged natural passage. An artificial 46 m shaft has been dug (inspired by a choke) to enter Titan 136 m off the floor, which makes a 241 m deep through trip. These are the deepest mainly-natural through trips in Britain, but due to the artificial nature of the top sections, they cannot hold the record for the deepest cave through trips, though they are still impressive.
A description is available on the HNH pages.