Just before reaching the first boulders of Lower Mad Meadows, head up the right fork to avoid the scramble/climbers/pads. Once up to level ground, continue along trail down-canyon (don't turn left towards Playground), trail will dip downhill slightly to a very apparent freestanding pillar/detached rock on your left, then start heading uphill a bit. When it levels out, the Amphitheater problems will be down to the right. For Pimpsqueak, continue straight a few yards then hard right into a passageway between two short walls (Tweedle Dee and Tweedle Dum are on the left wall). From there, Pimpsqueak will be visible 20 yds further; the last small boulder with Dog Log, etc. is just behind Pimpsqueak, pass between the two boulders beneath the roof and follow the trail around the left side of the trees.