We will use the trail up Fish Canyon to check out the Cienaga Campground, Pianobox, and Redrock Mountain.
This hike is east of I-5, a few miles south of Castaic Lake.
Redrock Mountain has several highpoints we will try to visit. The LPC-listed summit, with a benchmark, is 3991' but the real highpoint lacks a spot elevation and would normally be listed 4480+'.
Stats: 13.5 miles, 4400' gain. [NOTE: these stats have been updated]