Occoneechee Mountain is composed of three hills designated from northeast to southwest as Hill Number 1, Hill Number 2 and Hill Number 3 (see figure).  The abandoned quarry is located on the northwest side of Hill Number 3.  The apex of Hill Number 3 is the highest point in Orange County at 867 feet (264 meters) above sea level. The top of Hill Number 3 is occupied by a radio tower and a fire tower.

Generally, the topography of the Piedmont becomes steeper closer to the mountains in western North Carolina where monadnocks of more resistant rock stick up above the Piedmont surface. 

Monadnock - A mountain or area of greater elevation that has resisted erosion and stands isolated in an essentially level area.

The topography surrounding the Eno River as it flows between Hillsborough and the Few’s Mill area is unique to the eastern Piedmont.  Located near the eastern edge of the Piedmont, this area has topography similar to the foothills in the western portion of the Piedmont province near the mountains.  The west summit of Occoneechee Mountain rises more than 300 feet (90 meters) above the nearby Eno River and is the highest point in Orange County.  Compared with typical locations in the Piedmont, rock outcrops are relatively abundant in and around the Eno River in this area.  Occoneechee Mountain, along with a series of other hills in this area, are called monadnocks.