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Alum Rock

1. Alum Rock, California, United States [Populated Place] is in Santa Clara County; location is 37°21'58"N 121°49'34"W; elevation is 149 feet [SourceGSP]
2. Alum Rock, Pennsylvania, United States [Place] is in Clarion County; location is 41°10'2"N 79°37'17"W [SourceGSP]