Entrance: fl 12.50 ; 4 rooms, biggest upper-groud-cave-room 'bout 30 m by 10 m and ? 7m ? high.Take your sleeping bag and matrasses with U,(we will try to arrange matrasses)-to sleep or to perform with your (new-)partner(s),plzz clean up mess :-) It's our 2 party,we will party till we die (or them coppers...)...expect lot min/pro,don't mind the mixing !we just 1-ne build a freaky party....