The area of Alum Rock Park is 2,900,000.0 square meters.
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Alum Rock Airport was created in 1919.
Alum Creek State Park was created in 1974.
The area of Rock Creek Park is 11.414 square kilometers.
The area of Castle Rock Park is 72.843 square kilometers.
The area of Lime Rock Park is 1,316,037.70856448 square meters.
The area of Gull Rock National Park is 21.04 square kilometers.
The area of Cathedral Rock National Park is 89 square kilometers.
The area of Rock Cut State Park is 12.513 square kilometers.
The area of Bald Rock National Park is 88.83 square kilometers.
The area of Black Rock Mountain State Park is 5,179,976.22 square meters.
The address of the Dr. Roberto Cruz Alum Rock Branch Library is: 3090 Alum Rock Ave, San Jose, 95127 2807