I stood on the hood of my 2002 VW Jetta 1.8t, pulled out the binoculars and looked across the dried up lake bed in search of the "black rock". The book I was using for directions read " drive northeast across the playa till you see a black rock". Ten miles later and I still wasn't sure which mountain was the black rock. At that point, they all kinda looked the same. The book also mentioned to watch out for wet spots on the playa, as they are notorious for swallowing your car wheels and leaving you stranded 15+ miles in the middle of the desert. When we arrived about a mile out from the black rock, the whole base of the mountain was surrounded by wet spots. To make a long story shorter, we eventually found the hot spring and managed not get stuck on in the playa. There was a post next to the pool with a note. " Temperature recorded 112 degrees" dated one week prior.