Stock photography, photos: Lockhouse on the C & O Canal Stock photos of Canal and lockhouse at Pennyfield Lock in Maryland on the C & O Canal. This is part of the Chesapeake & Ohio National Historical Park of the US National Park Service. Photograph: © William Kuta Click for a larger image and more information Keywords associated with this stock photo: canal, towpath, hiking, lock, lockhouse, Maryland, national, park, C & O, Chesapeake, Ohio, historical, Pennyfield, William, Bill, Kuta