This route is by no means particularly great, but if the crowds in the Pony Express area are to heavy, this one might be an OK filler. The route is one pitch long with a 60 meter rope, but be warned and be careful at the top as it has a TON of loose rock on the belay ledge, and the downclimb to the anchors of Mesca-line will have your balance in practice. Start the route about 30 yards to the right of Mesca-line at a large block and from there go up about 50 feet in dirty, lichenous rock to an obvious undercling. Move left through the underclingand straight up the crack to the belay ledge. There is also another variation that goes up a crack more to the left at I guess 5.8.
Standard rack: nuts and cams and a few long slings are helpful.
I thought this climb was mediocre compared to the adjacent Sister Morphine. The rock is strange and suspect the whole way. The route starts left switches right, then back left. I suspect the FA party intended to follow the direct line up the right hand crack system, but was unable to. The left hand crack system (5.8 variation) makes a lot more sense. After the undercling left at the roof, it's easy to keep traversing left and step down a bit to the Mescaline anchors. The leader can lower from there to the ground with a 60m rope.