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The entrance leads to a non-obvious way on to the head of the short Bell Pitch, from where very awkward going leads out to a bigger passage to reach The Ramp a series of off-vertical pitches. The damper but technically easier Inlet Pitches drop to a Big Chamber, from where Pete's Purgatory starts, and leads in 800m of tortuous going to The Confluence and the larger streamway leading to the deepest point.
Better is the Purgatory Bypass which starts as dry fossil tubes, with a choice of routes to reach Junction Chamber where the Big Rift of Stellerweghöhle enters. Opposite, the huge fossil tube of Dartford Tunnel makes for easy progress to the Confluence, about halfway down the system. The continuing main streamway is interrupted by a bypassable sump and numerous pitches before a low airspace duck at the end of an unpromising canal leads to the spectacular Orgasm Chasm. Careful rigging avoids the water in this 140m shaft, ending in muddy passage and another short drop to a deep and terminal sump.
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