After descending past the Dark Hollow Falls, you can follow the Rose River Loop Trail (change the map type from "G. hybrid" to "USGS topo") along the Hogcamp Branch. This is a fairly gentle descent towards the point where the Hogcamp Branch joins the Rose River. The Rose River is part of the Rappahannock River watershed, and its waters ultimately end up in the Chesapeake Bay. For the most part, the Hogcamp Branch is running parallel to the trail. In typical mountain stream form, it provides frequent chances to see water running over rocks of various sizes.
I am sure the description in that previous paragraph is much more bland that the real thing. There is just something so very relaxing about the sound a mountain stream makes as it winds its way through, over and around the landscape. Every chance I get to watch and listen just makes me want to package it up and take it home with me. But, unfortunately, all I can do is take a picture and try to remember that sound.