State: California
Location: Mount Diablo State Park
Length, Round Trip: 11.3 miles
Trail Type: Out and Back
Elevation Change: 2660 feet
Best Season: Year-Round
Difficulty: More Difficult
Usage: Moderate
San Gabriel Mountains in the distance
Trail Information
The hike to Oyster Point is an exploration of some of the least visited parts of the park. Riggs Canyon is a mysterious Shangri-La, a deep valley of unspoiled wilderness, ringed by sandstone walls and weirdly eroded spires. The final climb to the OysterPoint ridge and its wonderful vistas is cross-country; watch out for poison oak. On the return trip, take a right on the Highland Ridge Trail and take the right-hand road back to the trailhead along the crest of grassy hills offering splendid distant views of Mt. Diablo.
At the entrance, take the road that goes straight ahead. Continue up to Highland Ridge (the Trail Map is essential!). turn left and then right, descending into Riggs Canyon along a maze of unnamed roads. Take Oyster Point Trail to the destination.
Directions
The trailhead is located on Morgan Territory Road heading toward Livermore, about four and-a-half miles from Marsh Creek Road junction, just 0.4 miles beyond the two narrow one-lane bridges. There is a corral on the left side of the road, opposite the State Park pedestrian gate.
