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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: 26 MAYBE: 4

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, March 17, 2019 @ 9:30 AM


Event Notes:

St. Patty's Lucky Hike


Luck will be on our side! The trails will dry out, the flowers will explode, the Sierras will be in full view, the weather will be perfect, and there will be cupcakes. I guarantee at least one of those. Join us at 9:30am for your choice of a moderate+ 7 mile/1500' shorter hike or a challenging 8 mile/1800' long hike. Bring a FLASHLIGHT to navigate the tunnel!

Route will be Somersville, left on connector to Hazel Atlas Mine, left over foot bridge, straight on Pittsburg Mine Trail, right on Stewartville, right through iron gate, left on Ridge Trail to end. Right on Stewartville, right to Prospect Tunnel, return to a right on Stewartville. Snack break at the Stewartville Backpack Camp. Continue back up Stewartville through iron gate. Short hike goes back down Stewartville to the cars.

The long hike turns left on Ridge Trail all the way to end, following down to the right on Chapparal Loop near the Tower of Power. Go over bridge, right on Manhattan Canyon, right on Nortonville, left on Somersville back to cars.

Please note: This group does not stay together on the hike instead relying on arrows put on the ground with flour to mark turns. You are encouraged to stay with others who are hiking your speed and you should also carry the trail route map either downloaded to your phone or in paper form.

Please download and/or print out the route map here: Route Map

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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