The headliners have been revealed for the 2015 Psycho California Festival. The festival will take place May 15 – 17 at The Observatory, in Santa Ana, CA, with Cult Of Luna headlining the first night, Sleep headlining the second night and Pentagram closing out the festival on the third night. Other previously announced acts include Eyehategod, Orange Goblin, Crowbar, Kylesa, OM, Earth, Russian Circles and many more.