San Francisco Wash is a large drainage with intermittent canyon sections found off in the cinder lands east of Flagstaff. Both sandstone/limestone and basalt are present at different points throughout the wash. However, it is the basalt that really captures the eye.
This is an expansive area with hot spots of development and certainly patches of undone lines. If you are into exploratory bouldering than this will certainly warrant a look see first hand. Especially when everything else in Flagstaff is wet...
Also home to the Barrio, which is a small sandstone/limestone sport area which offers up maybe 30 lines. The rock quality can vary dramatically, and these 40'-50' lines are spairingly bolted for their heights. Lots of 5.12s. Good training crag? Maybe.
From Flagstaff find your way to Townsend/Winona Road. Head east bound on this road to the junction of Leupp Road (505). Head north on Leupp Road until mile marker 434, and a 1/4 mile past that marker on the east (right) side of the road will be Forest Road 9128Q. Take this dirt road and follow it directly. There will be numerous "Ys" and turnoffs, but stay to the most beaten path, and at 1.2 miles you should come across another 9128Q sign. Continue on this signed road and soon you should start dropping down towards the wash. You will pass a couple of distinct plugs of volcanic rock out in the plains to your north. Different sections of the wash are below you at this point and can be accessed off of many different roads leading south towards it. To access the Barrio and Short Rope Area continue on this road until you reach a cattle guard. Do not cross the cattle guard but instead head left on another dirt track on the north side of fence heading northeast. At .7 miles from the cattle guard there is a right hand turn off. Take this to reach the west end of the Barrio and the Short Rope Area. Continue on the main road for another 1/4 mile to another turnoff that will take you to the east end of the Barrio.
The GPS coordinates should be spot on the short rope area.