True 1623-37 Schachtgruppe beim Hinterer Schwarzmooskogel 1623 1d 0/S - 37 1623-37 Discovered by Höhlenforschervereinigung Altaussee, undated.
Status is given as totally unexplored, so it could well be a CUCC hole by now, and have a different number. 1623/37.htm