Begin in the obvious chimney at the left side of the NW face, climb up & right to the midway, brushy ledges. From the upper far left end of these, ascend cracks on the left for 3 mixed pitches to Last Chance Ledge (good bivy). At the right end of this ledge, ascend a long aid pitch to a crack system leading to the summit. Descend the south side of the formation ( 4 or 5 raps).
From the top, walk south. You can either use the original descent, which goes down the Southwest corner, (4 or 5 raps). You can also head to the Southeast corner and descend the South Face Diagonal route. If you need to descend back down to Zion canyon, hike east to Hidden Canyon. More raps will be needed here....adventure descending for sure.