Drive up hwy 70 until just before the Rock Creek Power Plant. Drive up the gravel road as far as you dare and park here. Take the trail along the creek to the water slide and swimming hole.
Best in mid to late summer when it's hot because the water is pretty cold.
This is some great fun and adventure. The scenery is beautiful. There is a great swimming hole with rocks to jump off and a waterfall. There is also a natural rock waterslide.