Mt. Diablo State Park

(San Francisco Bay Region 3D image tour)

Click on a small image to open a larger 3D image.


Large outcrops and boulders of Domengine Sandstone (Eocene; 58 to 37 million years old) can be seen in the Rock City area along the Mt. Diablo South Gate Road. The Mt. Diablo's summit is visible in the distance.

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A massive sandstone boulder in the Rock City area.
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The Mt. Diablo's summit elevation is 3,849 feet. The Visitor Center has an observation deck and a museum.
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This view from the summit is looking toward the northwest overlooking Eagle Peak (a game refuge) and Mt. Zion (with a massive quarry on its north end). Suisin Bay is in the distance.

North Peak, as seen from the Mt. Diablo's Summit.
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These rocky spurs are on the southeast side of Mt. Diablo's summit. The crest of the Diablo Range in the distance.
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A trail follows a weathering joint (a rock fracture) in the sandstone in the Rock City area.
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These massive outcrops of serpentinite are found along the North Peak Trail not far from the trailhead on the Summit Road.
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A view of boulders in the Rock City area.
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A small cave in a sandstone outcrop in the Rock City area.
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Last modified 11/24/2003