Directions to Slide Mountain:

Follow I-5 North past Castaic to Templin Highway Turnoff (basically at the top of the first grade past Castaic). Turn left underneath the Interstate and drive about 1/4 mile to T intersection that will be Old 99. Turn right and head North for approximately 8 miles (just before road dead-ends in Pyramid Dam). There will be an overgrown road (18W04). Hike up this road approximately 5 miles to the lookout.