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Routes in Petroleum Base Buttress

Chossy's Nice Twin T,TR 5.7 5a 15 V+ 13 MVS 4b
Petroleum Based T 5.5 4b 13 IV+ 11 MS 4a
South End TR 5.7 5a 15 V+ 13 MVS 4b
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Type: Trad, TR, 25 ft
FA: unknown
Page Views: 795 total · 7/month
Shared By: rdlennon on Oct 11, 2008
Admins: Joe M., Old Timer, jim.dangle

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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 is to the left of and facing Building Blocks. It is the left-most of two cracks in the narrow face.


The crack takes excellent gear to about 1". Two bolts at top.


Fun little crack climb, good finger jams, a bit of a thin start. Oct 27, 2013

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