Muscles From Brussels starts on the right side of ...
This is a fun arete climb with some great rock and good moves. The start is a bit flakey, but the upper section of rock is excellent.
Begin a bit right of the prow, and make thin, balancy moves between sharp crimps. Move left onto the prow, then further left to some sinker pockets & a good rest. Move back up & right on good incut crimps to a blank section that is overcome with opposition slapping.
At the far right end of the Gym, this ascends a rounded, brown prow immediately right of a large South-facing panel of stone with the bolt route "Pump Up & Air Out".
Four well-spaced bolts and a hard-to-see two bolt anchor. The hardware on this route is very poor & widely spaced. The first two bolts have home-made sheet-metal hangers, and the anchor is just two bolts with hangers & no lowering hardware. It is possible to traverse up & right to the anchor on "The Armstrong Express" and lower from there.