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300–3,800 ft · CA🚗 Directions
Mount Diablo and the East Bay Hills — coast live oak and blue oak woodland, gray pine and chaparral rising above the Bay Area. Winter rains bring chanterelles, boletes and Amanita under the oaks from December through March; oysters on dead oak. Mushroom collecting is prohibited in Mount Diablo State Park and in all East Bay Regional Park District parks.
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