Another beautiful hike we went on recently is the Mossbrae Falls hike in Dunsmuir, California. Well worth the effort. A bit of info on the falls from Wikipedia:
"Mossbrae Falls is a waterfall flowing into the Sacramento River, in the Shasta Cascade area in Dunsmuir, California. The falls are located just south of the lower portion of Shasta Springs. Access to the falls via a mile-long hiking trail on the Union Pacific Railroad tracks is currently closed, as Union Pacific and the City of Dunsmuir figure out a safer route to the falls."