aerial photograph of a stone quarry in northern virginia in loudon county

infrastructure environmental contamination construction conservation environment earthmoving countryside photograph excavation industrial extraction landscape reservoir machinery equipment limestone materials aggregate undefined northern virginia panorama industry aircraft mountain landmark ashburn stadium plateau terrain geology crushed granite mineral country horizon skyline aerial quarry loudon county suburb flight damage mining issues gravel trucks layers cranes travel valley stone plain coast earth point roads river hill town site view luck rock sand dirt tree road city sea