Carolina Environmental Diversity Explorations

Lonely mountains · By Dirk Frankenberg

Map showing North Carolina monadnocks

On this field trip, we'll visit Pilot Mountain, Hanging Rock, Crowders Mountain, and Stone Mountain. (U.S. Geological survey map with labels added. More about the map)

One of the most striking sights on North Carolina’s inner Piedmont is the solitary peaks or ridges that loom above the plateau’s average elevation. Some of these are among the state’s most visited parks: Hanging Rock, Pilot Mountain, Crowders Mountain, Stone Mountain, and South Mountains. Many of these peaks are within sight of the Blue Ridge mountains further west, but all are separated from this range by 25 to 50 miles of rolling hills typical of the Piedmont. The dramatic topography and unusual geology of these mountains combined with the mixed mountain/piedmont biota that they support makes them well suited for both virtual and actual field trips.

Although the geology of these lonely mountains can be quite different from one another, they all share one characteristic: The rock that crowns their heights is far more resistant to erosion than is the rock that underlies and surrounds them. Hills or mountains of resistant rock rising above a peneplain — a level, surface produced by erosion — are called monadnocks after Mount Monadnock in New Hampshire, which is typical of these features, and was the first mountain ever climbed by your author. North Carolina’s monadnocks are varied and quite beautiful both for the views from their tops but also for the varied geology and ecology of their flanks.

Definitions

Piedmont n.
A geographic region of the southeastern United States between the Coastal Plain and the Appalachian foothills.
plateau n.
A high area with a flat top that may have deep canyons or be surrounded by cliffs; also sometimes called a mesa or butte.
elevation n.
Height on the earth's surface above sea level.
topography n.
The surface features of a place or region; the character, natural features, and configuration of land; terrain.
biota n.
The combined flora (plants) and fauna (animals) of a region.
monadnock n.
An isolated hill or mountain of resistant rock rising above an eroded lowland. [more]