An Upland Bog in North Carolina Andy Bobyarchick 20 April 2019 geology / nature / photographyLeave a comment This upland bog lays on the top of a mountain ridge in Uwharrie National Forest, NC. The ridge top is unusually flat, possibly caused by the weathering and erosion characteristics of underlying metamorphosed volcanic rocks or it is an old terrace created by the Pee Dee River, that is west of this location. The only drainage outlet is a small low-order ephemeral stream and the stream’s head is elevated above the level of the bog. There is also a geomorphic barrier on one side of the ridge created by a resistant rhyolite layer. Two deer ran across the bog as I approached.