Three Sisters Waterfalls Trail is a 4 mile out and back trail located near Julian, California that features a waterfall and is only recommended for very experienced outdoorsmen. The trail is primarily used for hiking, rock climbing & walking and is accessible from November until June.
Once you get on the Boulder Creek Truck Trail drive until you reach a tight hairpin turn. You are gong to see a small wooden structure next to a gate with the usual trail information. Although it does not mention 3 Sisters, this structure is Located right on the trail head. DO NOT TAKE THE TRAIL FARTHER TO THE RIGHT. That goes on for about 6 miles until you reach Cedar Creek Falls.