This festival was one of my best experiences ever.
Amazing people, amazing sound...
This year you could see Shpongle (dj set - only Simon), Hallucinogen, Ocelot, Radikal Guru...
Three stages - one chill, one trance (dark, psy etc.) and one dub, dubstep, dnb...
It's very cheap, no cops, place is amazing (you are in the woods near river)
The place is in the Middle of Croatia.
For more information, go here:

http://www.losttheoryfestival.com/