The time I went there I drove from Gerlach up Soldier Meadows Road - just before you get to Solder Meadows Cabins and Resort it's to your left. I don't remember any signage but it was late in the day ( 11/2/13 ) according to my photos) and I saw the steam coming up from the pools so I just followed the dirt road up to it.
Highly recommend High Rock Canyon if you have the time. I spent a couple days there and only saw a middle aged couple backpacking. Turns out they were training for their PCT through hike in the spring. Good luck finding the pools - there are several roads in the area that criss cross the main roads but you'll eventually get there. It's no more than a 1/2 mile or so off Solder Meadow Road
