Save Mount Diablo will expand its free Discover Diablo Hikes and Outings Program in 2025, including into areas rarely open to the public. The nonprofit conservation group’s program offers guided ...

The rare species, Mt. Diablo Globe Lily, is shown in this photo captured April 27 by Patch reader Fran Guidry using his iPhone 12 Pro Max. "We enjoyed a lovely Saturday morning wildflower hike ...

The trail was a wide path snaked with deep cracks ... An ancient undersea volcano, Mount Diablo, which now rises some 3,800 feet above sea level, was once surrounded by water.