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Petroleum Base Buttress
Routes Sorted
L to R R to L Alpha
Chossy's Nice Twin T,TR 
Petroleum Based T 
South End TR 
Unsorted Routes:

Chossy's Nice Twin 

YDS: 5.7 French: 5a Ewbanks: 15 UIAA: V+ ZA: 13 British: MVS 4b

Type:  Trad, TR, 1 pitch, 25'
Consensus:  YDS: 5.6 French: 4c Ewbanks: 14 UIAA: V ZA: 12 British: S 4b [details]
Page Views: 569
Submitted By: rdlennon on Oct 11, 2008

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BETA PHOTO: The crack and arete.


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.

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Rock Climbing Photo: Chossy's Nice Twin.
Chossy's Nice Twin.

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By Alcapuke
Oct 27, 2013

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

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