Uploaded: Thu, Jul 22, 2021, 2:14 pm A mention of the Diablo Range in the Tri-Valley is likely to draw the response: "What range? Do you mean Mount Diablo?" Mount Diablo is the northern peak of the Diablo Range, which begins at the Carquinez Strait, runs south to include the Altamont Pass near Livermore and Mount Hamilton east of San Jose, and continues through 12 counties for a total of 150 miles to the Antelope Valley. Its highest peak, San Benito Mountain, reaches 5,267 feet. These vast mountains, hills and valleys are often not recognized as the Diablo Range even as residents traverse the...