July 08, 2012 by Bay Nature Staff
At this preserve you can hike the extensive trail network above ground, or learn about the historic coal and sand ...
October 06, 2011 by John Hart
In eastern Contra Costa and Alameda counties, an ambitious vision for protecting big pieces of remaining open space is taking shape: From Black Diamond Mines and Mount Diablo to Brushy Peak and Sunol, several major agreements promise to replace ad hoc mitigation projects with a broader canvas of protected and connected habitat.
April 01, 2008 by Horst Rademacher
The peaceful hills of Black Diamond Mines Regional Preserve weren't always so: One hundred twenty years ago, you'd have found bustling towns full of miners and their families and, nearby, the mine works and railroads that carried out tons of coal and sand, feeding the booming industries of Northern California. Today, the park offers grand vistas, abundant wildflowers, and a mine tour that gives an illuminating view of both the work of the miners and the geological history that brought them here and shaped the aboveground landscape.