The observation building on the summit of Mount Diablo

(January 26, 2009)

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Inside the summit observation building on Mount Diablo

(January 26, 2009)

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On the Devils Elbow Trail high on the south side of Mount Diablo

(January 26, 2009)

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Just below the Devils Pulpit on the southeast ridge of Mount Diablo

(January 26, 2009)

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On the northeast ridge of the North Peak of Mount Diablo

(January 26, 2009)

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North Peak of Mount Diablo

(January 26, 2009)

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Antennas on the North Peak of Mount Diablo

(January 26, 2009)

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At the mouth of Mitchell Canyon, opposite the quarry

(March 22, 2001)

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Hillside forest of blue oak, near Mitchell Canyon

(March 22, 2001)

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Halfway up the south slope of Curry Canyon on Mount Diablo

(May 10, 2005)

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