The Geology of D.A.R. State Park, Mt. Philo State Forest Park, Sand Bar State Park

Geology -- Vermont -- D.A.R. State Park; Geology -- Vermont -- Mt. Philo State Forest Park; Geology -- Vermont -- Sand Bar State Park; D.A.R. State Park (Vt.); Mt. Philo State Forest Park (Vt.); Sand Bar State Park (Vt.); Parks -- Vermont