We are planning on going out there on the weekend of March 29th, there will also be a rockcrawling event at Cougar Buttes too and we want to check them out. Keep an eye on our bb for further info on where we will be camping, I'm guessing it'll be Bessemer Mine Rd./Soggy Lake.
http://www.spinninfours.com/forums/viewtopic.php?t=1143Spinnin' Fours 4x4 Club, SoCal, Bulletin Board :: View topic - Johnson Valley/Cougar Buttes March 29-30