The range, which is 200 miles long and 3.5 million acres in size, runs through 12 counties, marked notably by Mount Diablo on the northern edge, in Contra Costa County. About 25% of the land in ...
That land will now be permanently preserved and managed as part of a new state program focused on the San Andreas fault’s ...
A grant helped pay for the 98-acre property in Contra Costa County that is said to contain rare volcanic habitat.