I stayed here for a single night while I was exploring West Virginia, but I wish I had stayed longer. This is one of the most beautiful campgrounds I've ever seen.
The front section of Seneca Shadows isn't all that interesting. There are standard sites here with gravel pads, water, and electricity, good for trailers and RVs. The sites are of an average size and have plenty of shade and privacy.
There is also a large tent-only section at the back of the campground. This is where I stayed, and this is what made Seneca Shadows memorable. The tent section is a giant meadow with picnic tables and tent pads arranged around the edges. There is also a picnic shelter here. Parking is adjacent; expect to carry your gear a few hundred feet. Many of the sites have shade trees, and a few have shrubs for privacy, but nearly all have an incredible view of Seneca Rocks, a magnificent geological feature.
There are vault toilets located close to the tent section, but these didn't smell great so I avoided them. There are real bathrooms with flushing toilets, running water, and showers located just up the road. These were nice and clean when I visited.
I intend to return someday for a closer look at Seneca Rocks. This place is a destination, not just a stopover.