A reachy problem, this is the "intro" to Leg-Lock rock. Start with a right undercling and a left sidepull, and then work your way up to the large knob at the top of the boulder.
Location
On the left "corner" of Leg-Lock rock, to the left of Charles in Charge. Moonstone faces it. Descend via the tree to the right of Charles or downclimb off the back left "corner."