False 1623-153 Schwa Schacht 153 1623 2b 1/S + 153 1623-153 Discovered CUCC 1985 (on last day), explored 1987 Entrance climb of 12m in doline appears to choke, but a small letterbox squeeze in side of shaft leads to broken pitch. First section of 6m in a rift less than 2m wide leads to a ledge, then 12m down to a floor. A slightly hammered squeeze leads into another narrow rift dropping 10m. This constricts to 20cm and then becomes totally impassable only shortly below. Squeezes are quite epic to reverse. Grade 1 elevation from 1987 Log Book, surface survey from cairn on Bunter's Bulge.

Sketch survey, 9k gif

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