Stay Puft Buttress. The Stay Puft Buttress (1,700' V 5.10 A1) was established by Josh Borof and Paul Emrick on June 19, in scorching hot weather. The route starts on top of the huge boulder about 400 feet from the river in the S.F.O.B. Gully and ascends the first buttress downstream of the South Chasm View Wall. The lower portion features shade, nice cracks, and a 50-foot runout 5.7 slab off the belay. Higher, the route swings onto the sunny west face and involves a 15-foot section of dirty A1. Cleaned it should go at mid-5.12. The main theme of the route is mossy 5.10 offwidths, so stay puft.