An entrance apparently previously explored (marked "-"), surveyed to in 1999 and given the temporary name MI5. It is a small shaft, being pointed out by Mike and Tina Richardson, at the end of a short surface survey from 161c. This view is pretty much on the route from the col between Vorderer Schwarzmooskogel (seen in the background) and the south ridge of Hinterer Schwarzmooskogel leading to the 161a entrance.
Photo © Earl Merson, 1999