You park just west of the map waypoint on the wide shoulder (remember to lock your car, thefts have been reported in this area).  The trailhead is really just an opening on the side of the road. Follow this to the creek and start making your way along the rocks upstream.  The difficulty of the climb varies with the time of year, early summer will have lots of water making some spots more difficult, while late summer tends to be easier.

After about 3 miles you will come upon the distinguishable "slide".  Make your way up the left side of the pool to reach the cliff and slide. Once again, depending on the time of year, the water can vary.  The pool is almost always deep enough to jump into, but large amounts of water can make the slide a bit dangerous. Make sure to check out the cave off to the right side of the pool as well!