Crater Mountain marks the one and only time I've followed arrows painted on the rock to climb to a summit. The "path" (more like ledges) is mostly on the labyrinthine West Face and takes all but about half-an-hour from where the trail unofficially ends below the summit tower. The arrows made it fun. Not for the faint of heart though.
As of Aug. 1, 2005, the Granite Creek footbridge (near the old guard station) is non-existent. It appears the USFS is rebuilding it. In the mean time, walk about 50-100 feet upriver and cross on a large, stable log.