Park at the "official" parking area at the end of the Sabrina Basin road (to Buttermilks). Hike ~4 miles into the upper basin. From Blue Lake: take the fork towards Donkey Lake to find more crack and high-ball problems; take the right fork towards Midnight Lake for more overhung, low-ball, and traversing terrain. The rock along the trails is just the tip-of-the-berg as many problems lay tucked away above your path. Please RESPECT this wilderness, it receives a lot of traffic: please don't use chalk, don't trample fragile alpine vegetation, and Leave No Trace.