The lowest entrance drops via a 10m pitch into a descending rift. The rift drops steadily over boulders to a choke. Up rift from the pitch, daylight is reached from one of the other holes.
Scanned survey notes
- Just a few metres up valley from B2, a series of holes. (Cambridge Underground 1977 gives bearings of Loser 238°, Bräuning Nase 280°. However, Loser is not visible from this area and it is most likely that this bearing is to Sommersitz, which looks rather similar from this direction.) Not relocated in search in 1990.