Mali naravni most - Little natural bridge
by Cyril Mayaud, Karst Research Institute ZRC SAZU, Postojna, Slovenia
The Mali naravni most is the rest of a roof collapsed cave belonging to the Rakov Skocjan valley (middle Slovenia). The 3 kilometers long Rak river is supplied by the intermittent Cerknica lake and disapear in the Tkalca cave. Then, the river exurges at the Planinsko polje under the name of Unica river and disappears again in a cave network. Finally, the water appears in Vrhnika under the name of Ljubljanica river.
Cyril Mayaud (distributed via imaggeo.egu.eu)