Seneca Rocks is a large crag and local landmark in Pendleton County in the Eastern Panhandle of West Virginia, USA. It is the only "true peak" — a peak inaccessible except by technical rock climbing techniques — on the East Coast of the United States. One of the best-known scenic attractions in West Virginia, the sheer rock faces are a popular challenge for rock climbers.
Seneca Rocks is at the north end of the River Knobs, which contain several other similar "razorback" ridges or "fins" such as Judy Rocks and Nelson Rocks, all on the western flank of North Fork Mountain. Seneca Rocks is a prominent and visually striking formation rising nearly 900 feet above the confluence of Seneca Creek with the North Fork of the South Branch of the Potomac River. It overlooks the community of Seneca Rocks, formerly known as "Mouth of Seneca". The Rocks consist of a North and a South Peak, with a central notch between. Formerly, a prominent pinnacle — "the Gendarme" — occupied the notch.