From Highway 126, turn north on Piru Canyon Road. Drive 6 miles to the Lake Piru gatehouse and inform staff that you are parking at the Pothole Trailhead. Drive approximately 5 miles on Piru Canyon Road to the trailhead parking lot. The trail switchbacks up the ridgeline for 2.7 miles, enters the Sespe Wilderness, and descends into the Potholes for another 2 miles. A loop hike may be taken by connecting with the Agua Blanca Trail (19W10).
This trail branches from the Agua Blanca Trail just upstream from the Devils Gateway and before you reach Log Cabin Camp. It climbs up a small south side canyon with a small stream in its bottom. Reaching the head of the canyon you come to Pothole Spring; with an old cabin and farming tools that all had to be packed to the cabin area on mule back by William Whitaker. Following the trail south for a short distance, you come to a trail junction. The right hand fork is little used and leads to The Pothole. After leaving the junction, Trail 18W04 climbs steeply to reach the top of a north south ridge. Here there are excellent views of the Devils Gateway far down below you and then on up Piru Creek to the Big Narrows. Finally, it steeply descends to the road between Lake Piru and Blue Point.
The Pothole is caused by a gigantic slide that descended across the canyon forming a large dam. Over the years, the area back of the dam has filled in with sand and silt until it has now formed a floor. This area sometimes floods for a very short period after very heavy rain. A grove of cottonwood trees covers part of the flat area.
Where the trail enters The Pothole the entrance is partially covered by sand, silt and weeds and the remains of an old horse drawn hay rake. The hay rake was used by William Whitaker when he cut the mature grass for hay.
POTHOLE SPRING
Water seeping into the aquifer at The Pothole seeps out down the canyon to form a small marsh at the spring. William Whitaker filed on 80 acres and by Cash Entry, in 1891 for which he received a Patent. He built a small cabin and packed numerous farm tools up by mule back to farm at the spring as well as The Pothole.
Log Cabin (1510 feet)