The total explored depth of this sinkhole is approximately 530 metres (1,740 ft) with a volume of roughly 25–30 million cubic metres,[2] thus it is the third largest sinkhole in the world,[2] and the deepest known case of a collapse doline containing a lake.

[3] Water drains out of the basin through underground waterways that descend below the level of the lake floor.

The deepest known point of the lake is 4 metres (13 ft) below sea level.

[4] The lake is inhabited with endemic and endangered spotted minnow (Delminichthys adspersus)[5] and Imotski spined loach (Cobitis illyrica).

[8] It has been studied by Philipp Ballif [hr], Artur Gavazzi, J. Daneš, Otto Oppitz, A. Ujević, and others.