This park is a walking trail through a part of the old Merrimac Coal Mines. This mine was one of the oldest anthracite mine in Montgomery County. It was a government colliery for the Confederacy and takes it name for the famed ironclad the Merrimac, which was retooled and renamed the C.S.Virginia. Coal from this mine was used to power that vessel. The name Merrimac was given to the mines years after the war and the surrounding neighborhood also bears the name. Hours: Dawn to Dusk