Seneca Rocks is a 250 foot thick, white and grey tuscarora quartzite razorback ridge that stands 900 feet above the North Fork of the South Banch of the Potomac River. This visually striking formation sits between North Fork mountain and the Eastern Continental Divide and is a well known landmark. It's sheer walls and height make it a popular location for technical rock climbers. Champ Rock is close by and both were used in WW II for training troops rock climbing for the Normandy invasion. The nearby Potomac River is a well known fishing location. This gallery provides a visual tour of the area.