False 1623-200 700m north of Schwarzmoossattel. From 164, avoid 189 (easiest 15m to its right over a small ridge, but OK immediately on its right edge), then go roughly NNW (a few cairns - 1996 vintage orange paint has completely faded). This leads up onto the right edge of a ridge (the main part of which is deep Lärchen), passing right of the OAV ski marker pole. This is an easy walk above a short (climbable) cliff looking down onto 210. When this easy walk is interrupted by a step down, head leftish over a series of limestone steps to reach a descent into a large broken area (near 173). Climb steeply left up boulders to a large cairn, then along a sloping limestone shelf. Shortly ahead is an abrupt headwall, below which is the shaft of Lost Rucksack Cave (given temporary number CUCC 1993 01). The area could also be reached (with more difficulty) from the "central" plateau area towards 76, and also via the "Geologists' walk" which passes much further left via 171 and 172.

Photo of 1993 descent

Adam Cooper descending to place a bolt below the lip in 1993

T M6 stud with alloy tag giving kataster number on flat rock NE of shaft. S 1623.t200 1623.gps00.93_01a gps00.93_01b post selective availability GPS