Fish Dam Creek is a nice way to get into Dark Mountain, and great fun going down. From trailhead below the dam, follow the gravel trail from the parking lot past the spillway. Continue straight where the Yadkin Greenway turns right at the bridge. You'll pass a field on the left on your way to the top of the ridge. When you reach the top, you can continue on Fish Dam Creek past the overlook down to the Dark Mountain trailhead, or take a sharp right at the top (merging with the Dark Mountain entrance trail), to skip an additional climb.