False 1623-241 In small elliptical depression around 100m N of stone bridge. A short tunnel to the south from this depression can be seen from the stone bridge; this is triangular in cross-section, hence the name.

entrance photo - 75k jpeg

T Tagged as 2003-04 by initial explorers. Retagged with final kataster number 2004-07-31. S 1623.p241