Acadia National Park: Ranger Jennifer Anderson talks about the geology that makes Acadia National Park unique during a guided tour of Seawall Picnic Area in Acadia National Park Wednesday. Visitors were able to join a ranger on a one hour walk along the rocky, cobble stone beach and learn about the unique volcanic and glacial geology that makes Acadia National Park special. (Photo by Ashley L. Conti/Friends of Acadia/NPS)