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Black Hill

Volcanic Plug in Morro Bay State Park, Coast Ranges in Morro Bay, CA

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Black Hill is a hill in Morro Bay, California. It is a part of Morro Bay State Park. The hill is the second to last in a series of volcanic plugs called the Nine Sisters. The west side of Black Hill is accessible by a trail that goes all the way to the top. The road to the trail is officially open during the day, but the opening and closing of the gate is unreliable. Black Hill is rumored to have received its name because of a tar seep on the north side of the hill.

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Geologic Formation

Tertiary intrusive rocks (hypabyssal), unit 4 (Tranquillon-Obispo) (CATi4;0)

Geologic Formation