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Hike Details for Upper Parking Area

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Black Diamond Mines Regional Preserve
Upper Parking Area
RSVPs - 51 -- YES: 21 NO: 24 MAYBE: 6

Upper Parking Area
Click the Staging Area/Trail Name above for park information.
City: Antioch
Region: EastBay
Park: Black Diamond Mines Regional Preserve
Park Map URL: Click Here

Sunday, April 08, 2018 @ 9:30 AM


Event Notes:

Coal Canyon and Coal Mines


Let's see what the Pineapple Express rainstorm brings us and hike anyway at 9:30am through Black Diamond Mines. Expect mud. Your choice of a moderate+ 7 mile/1600' shorter hike or a moderate+ 7.5 mile/1900' long hike.

Please download and print out the trail route map here. Route will be Somersville, right on Nortonville, left on Manhattan Canyon, right on connector, right on Black Diamond Trail, left on Nortonville, left on Black Diamond, left on Coal Canyon to a looksee at Jim's Place. Continue on, left on Black Diamond Way, right on No Name Trail out to a rock outcrop overlooking Mount Diablo for a break. Hike continues on Black Diamond Trail, right on Manhattan Canyon down to the bridge. Hikes split here. Short hike turns left before bridge and follows trail down to next junction, turning left down Chapparal loop. Take the stairs down to the visitor center and have a look around before returning back down the Somersville Road trail to the cars.

Long hike crosses bridge and up to the Ridge trail, turning left. Turn left on Chapparal Loop veering right at the split to stay on Chapparal Loop. Turn right at stop 7 to check out the Powder Magazine, then continue down turning right and up a little trail to investigate the Stope. Bring a flashlight to peek in the chamber. Retrace your steps then continue down until you arrive at the Hazel Atlas Portal where the mine tours begin. Walk on the railroad tracks down to the right and then right to find Pittsburg Mine Trail. Turn left up through the gate onto Stewartville, then straight through the gate and right at Somersville Road to the cars. Facilities at Trailhead only. Dogs Allowed. Route will be marked with flour arrows.

Contact: Steve Smith
Email: [email protected]
Cell Phone: (925) 325-0805


Trail Notes:

Black Diamond Mines Regional Preserve offers over 65 miles of hiking trails on over 6000 acres of hills and valleys.


Trailhead Directions:
Click Here for a Map

From Highway 4, take exit #26A. Turn right on Somersville Rd and head south 1.4 miles. Continue straight through the entrance gate on Somersville, do not make any turns, following it all the way into the park, about 1.2 miles. Continue past the lower parking area for 1 mile to the end of the road, parking on the right.

Parking Fee: $5 Weekends

The trailhead information on this page was last updated
Thursday, November 30, 2017.

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