Swallowtails
Anise Swallowtail
Papilio zelicaon
California Pipevine Swallowtail
Battus philenor
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Pale Swallowtail
Papilio eurymedon
Two-tailed Swallowtail
Papilio multicaudatus
Western Tiger Swallowtail
Papilio rutulus
Park Alerts [updated on 09/29/20]​​​
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The Summit Visitor Center is now open for outdoor sales and service Friday through Monday 10 - 4.
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Mitchell Canyon Visitor Center will open for outdoor service on weekends between 8 - 12 starting October 3.
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All park visitors must distance themselves from others by the required 6 feet. Stay Safe.
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Water Shortage: All visitors are encouraged to bring water for consumption during their visit. Plan Ahead.
Take a Multimedia Tour of Mount Diablo
PRESERVATION THROUGH EDUCATION
