Upcoming Events

Wed, Aug 26
Plate Tectonic Evolution of Mount Diablo
Webinar
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Aug 26, 2026, 7:00 PM – 8:00 PM
Webinar
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Sat, Aug 29
Sunset to Moonrise
Lower Summit Parking Lot
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Aug 29, 2026, 7:00 PM – 10:00 PM
Lower Summit Parking Lot, Summit Rd, Walnut Creek, CA 94598, USA
Lower Summit Parking Lot
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Wed, Sep 09
Wonder Hikes 2026
Mitchell Canyon Visitor Center
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Sep 09, 2026, 8:30 AM – 12:30 PM
Mitchell Canyon Visitor Center, 96 Mitchell Canyon Rd, Clayton, CA 94517, USA
Reservation required
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Sat, Sep 12
Are You Solar Powered?
Lower Summit Parking Lot
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Sep 12, 2026, 6:30 PM – 9:30 PM
Lower Summit Parking Lot, Summit Rd, Walnut Creek, CA 94598, USA
Lower Summit Parking Lot
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Sat, Oct 10
CubeSats, the Small Satellite Revolution
Lower Summit Parking Lot
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Oct 10, 2026, 6:00 PM – 9:00 PM
Lower Summit Parking Lot, Summit Rd, Walnut Creek, CA 94598, USA
Lower Summit Parking Lot
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Wed, Oct 14
Wonder Hikes 2026
Mitchell Canyon Visitor Center
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Oct 14, 2026, 8:30 AM – 12:30 PM
Mitchell Canyon Visitor Center, 96 Mitchell Canyon Rd, Clayton, CA 94517, USA
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Sun, Oct 25
Halloween Hike on Devil Mountain
Mitchell Canyon Visitors Center
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Oct 25, 2026, 3:00 PM – 6:00 PM
Mitchell Canyon Visitors Center, 96 Mitchell Canyon Rd, Clayton, CA 94517, USA
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Wed, Nov 11
Wonder Hikes 2026
Mitchell Canyon Visitor Center
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Nov 11, 2026, 9:00 AM – 1:00 PM
Mitchell Canyon Visitor Center, 96 Mitchell Canyon Rd, Clayton, CA 94517, USA
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Wed, Dec 09
Wonder Hikes 2026
Mitchell Canyon Visitor Center
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Dec 09, 2026, 9:00 AM – 1:00 PM
Mitchell Canyon Visitor Center, 96 Mitchell Canyon Rd, Clayton, CA 94517, USA
Reservation required
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