Sand camp is essentially a dispersed camping area. There is a large gravel parking lot and a pit toilet available. There is a path down to the Smith River where you can set up tents and tent camp if you want. 

The toilet was a basic pit toilet, but it was fairly clean as far as those go. 

We parked our VW Bus in the gravel lot for the night, it was very quiet. Though its next to a road, there is very little traffic at night as this area is fairly remote. The sky was dark and clear, perfect for stargazing. The few other people camping there were quiet and friendly.