After walking into EPC, pass through the gate beyond the pavilion. Continue on the road for a short distance and head right uphill on one of the trails for the Spires/Outrage Wall. The Blue Dot trail on the north side of the spires or the Pink Dot trail on the south side of the spires will both get you to The Dihedrals area. Take either trail to a solid trail uphill of the spires and keep going uphill on loose trail over a small rise and back down a bit to the dihedrals. The dark corners of the dihedrals will be obvious. This takes about 20-30 minutes from the pavilion in EPC.