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Rolling Rock

Massachusetts State Glacial Rock

Glacial boulder "Balance Rock - 004" at Balance Rock State Park in Lanesborough, MA (near Pittsfield); photo by Melville Society on Flickr (noncommercial use permitted with attribution / share alike).

Official State Glacial Rock of Massachusetts

Massachusetts designated "Rolling Rock" (a balanced glacial boulder located in the city of Fall River, MA) as the official state glacial rock of the Commonwealth in 2008. All State Rocks & MInerals

Massachusetts also recognizes an official state rock (roxbury puddingstone), a building stone (granite), an explorer rock (Dighton rock), a historical rock (Plymouth rock), a state mineral (babingtonite), and a state gem (rhodonite).