The Dump recieves lots of sun, making it a great winter destination. It also has probably the best concentration of sport routes in the NC High Country. That being said, you may find lots of people here. They'll probably be concentrated on a small handful of routes, though. The metamorphic sandstone lends itself to nice edges, pockets, and other faceholds. There's a good mix of steep and slabby routes at a variety of difficulties. Personal two cents: A great resource for local Boone climbers, but not worth the trip, especially if you can reach the great sport climbing in Tennessee, West Virginia, or Kentucky in a similar amount of time.
Getting There
The Dump is roadside off of Highway 221 between Blowing Rock and Linville. Coming from Blowing Rock, look for a large dirt parking lot on the left just past the Avery/Caldwell county line sign. Leave your car and hike up the obvious trail to the cliff (about 2 minutes).
The Classics
Mountain Project's determination of some of the classic, most popular, highest rated routes for The Dump:
There used to be a list of all the routes on a website. I think it might have been called climbboonenc.com or something like that. It even had the GPS cords for the parking area. I don't think that site is around anymore though.
The Boone climbing site was a great resource for climbs at The Dump, Ship Rock, and Holloway Mountain, but I can't seem to find it anymore either. If anyone knows anything about the demise of that site, I'd like to know what happened.