ANTIOCH — Coal miners from a booming early Bay Area industry lay on their sides in 3-foot-tall tunnels to scrape and hack out soft black ore with pickaxes deep inside the Mount Diablo foothills ...

The view from Buckeye Hill at Shell Ridge, a view down the Briones-to-Mount Diablo Trail to the arrow spires of Castle Rocks -- with more geologic formations in the area -- and beyond to Mount ...

Bicyclists and other friends of Joe Shami --- the proclaimed "Legend of Mount Diablo" bicyclists --- will hold a memorial service for him next month that is likely to include an optional bike ride ...

The quake struck at 12:49 a.m. and was located 2 kilometers northwest of the unincorporated community of Diablo, near Danville. It had a depth of 7.3 kilometers, according to USGS officials.