This has an easy, slightly overhung start to a ledge. Climb crimps and sidepulls with good feet through the crux and then nice holds to the topout. This route has glue-in toprope anchors.

131 with a Hangover

Chossy's Nice Twin

South End

Petroleum Based

Chossy’s Arete

This fun climb follows the slanting hand-sized crack around an arete, then follows that arete to the top of the FK buttress. Beginning at the obvious right-angling crack on the right side of the FK Face, strenuously layback the crack until you are around the corner and safely on a ledge. Continue up the crimpy face, or, for a more exciting alternative, follow the arete proper to the top, as for Nob Job.

This unfortunately named climb ascends the zig-zagging hand crack on the north side of the Petroleum Based Buttress. Start on thin face moves to gain the crack. A few strenuous jam and layback moves are required to gain a ledge. From here, cop out up a dirty crack to the left, or continue up the unprotected but easy arete to the anchors.

This climb ascends the crack system in the middle of the face to the right of FK Face. It is one of few Den Rock climbs that can be safely led. Start on jugs in a big horizontal break and follow a depression up to a ledge. Then, layback a right-slanting crack towards the top, breaking left onto an easy slab to gain the anchors.

Layback the arete to the right of Chossy’s Nice Twin. This is contrived but fun. You can use the same anchors, just extend over the right side face. Optionally you can traverse out and finish on the face above a large jug.

This is a 25 foot crag that faces east. There were no fixed anchors above.L->R:A. South End, 7 (starts on FK Face).B. 131 with a Hangover, 7 to 7+, 30' TR.C. unknown to traverse left, 4.D. South End, 7.E. The P.B. Buttress Route, 4.F. NE Buttress, 6.G. Chossy's Nice Twin, 7, 1p, 25', gear or TR.H. Chossy’s Arete, 7, 1p, 20', TR.

Description

Protection

Routes in Petroleum Base Buttress