This can be accessed through the Douglas Blvd, Folsom Lake SRA entrance ($12 entrance fee I believe). Continue all the way to the back of the 3 mile windy road until you hit the parking lot for Beeks Bight. There are some boulder problems right out of the parking lot that you can't miss, however this boulder problem and a few others are located further north. Continue along one of the trails or hike down to the water and follow the water line towards Auburn for approx 3/4 mile until you come to a meadow with three large houses up on the hill (the backside of Los Lagos). In this meadow you will find a large slabby boulder problem that can't be missed, and up towards the hill that the houses are on you will see this boulder.