This campground is situated just off the road through beautiful Smoke Hole Canyon (a sharp turn if you're northbound). The entrance has video surveillance and there is a self-pay station at a tree on on your way in. Pay your $10 and drive in to set up. Sites are grassy, not clearly delineated, and line the river bank. Find a spot and set up. The hill ascending to the road has a number of RVs of varying age and conditions. Vault toilet & portapotty are available, but no other amenities except fire rings.
The South Branch of the Potomac forms the other border of the campground and its not uncommon to see fisherman in the river, The river is stocked with trout and there are some areas with catch and release instructions. This site will give you some additional information about licensing: Fishing Smoke Hole Canyon
Eagle Rocks, named after a Revolutionary War soldier buried in the area tower over the river. I don't climb, but I did see a note indicating that it's a 5.11 rating
There are small shops about 3 miles in either direction if you forgot something basic. To the north, if you're looking for something to explore on a rainy day, consider a visit to Smoke Hole Caverns