Obvious arete on the other side of BotL. Hike on the left side of the lake, reach a talused drainage and follow that up and trending right until you reach a ledge, cut back to reach the base of the climb.
gear: single rack BD .3-2 + nuts
Pitch 1: 5.11c (35m) 9bolts, gear recommended but not necessary
Pitch 2: 5.10c (15m) 3bolts, 2pins. gear only needed to tame long 4th class runout
Pitch 3: 5.9 (45m) 10bolts, gear advised
Pitch 4: 5.10b (15m) 3bolts, gear recommended