- This event has passed.
Black Rock Heritage Hike
December 16, 2018 @ 1:00 pm - 2:30 pm
Join Ranger Erik to explore the ruins of Black Rock Mill, one of the county’s few remaining water-powered mills. Learn why Maryland was briefly considered the “grain belt” of the nation. Meet at 16500 Black Rock Rd, Germantown, MD 20874. Parking is limited – carpool is highly encouraged.