Overview The Seneca Shadows Campground overlooks Seneca Rocks and is surrounded by mountains on both the east and west. Hiking and nature study at Seneca Rocks are just a couple of the popular activities in the area. The North Fork South Branch Potomac River is nearby, making fishing a popular pastime. Seneca Shadows Campground is comprised of 11 standard camping units with electric hookups, 2 double camping units with electric hookups, 23 standard camping units without electric, 2 double campin