San Francisco: Black Diamond Mines Loop

Explore historic sites on this 5.9-mile loop in the fascinating Black Diamond Mines Regional Preserve-once California's largest coalfield.
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Explore historic sites on this 5.9-mile loop in the fascinating Black Diamond Mines Regional Preserve-once California's largest coalfield.

Trail Facts

  • Distance: 9.3

Waypoints

BDM001

Location: 37.9583015441894, -121.863327026367

Trailhead located at far end of upper parking lot; follow signs to visitor center

BDM002

Location: 37.9550094604492, -121.865539550781

Trail begins at top of stairs R of building; peer down Eureka Slope mineshaft; L @ 3-way onto Hazel/Atlas Chaparral Loop Trail

BDM003

Location: 37.9553108215332, -121.864051818848

R @ 4-way onto Chaparral Loop

BDM004

Location: 37.9528579711914, -121.863998413086

R @ 4-way; Chaparral Loop

BDM005

Location: 37.952262878418, -121.865013122559

L @ 3-way to Ridge Trail

BDM006

Location: 37.9508438110352, -121.864669799805

R @ 4-way past power tower

BDM007

Location: 37.9525451660156, -121.869003295898

L @ 3-way onto Manhattan Canyon Trail; bear L

BDM008

Location: 37.9493942260742, -121.871200561523

L @ 3-way onto Black Diamond Trail

BDM009

Location: 37.9527320861816, -121.891593933105

R @ 3-way to Jim's Place (old underground dwelling) onto Coal Canyon Trail

BDM010

Location: 37.956485748291, -121.882316589355

Caution: Watch for rattlesnakes

BDM011

Location: 37.9584426879883, -121.882514953613

R @ 3-way onto Nortonville Trail

BDM012

Location: 37.9561195373535, -121.874435424805

L @ 3-way, toward Rose Hill cemetery

BDM013

Location: 37.957592010498, -121.872001647949

Rose Hill cemetery is all that remains of the mining communities that thrived here in 1850-1900; return to trailhead