The Acorn community is located where U.S. Highway 71 joins U.S. 270. Foran Gap, the pass through a saddle in Fourche Mountain, through which U.S. Highway 71/270 travels can be seen. Wolf Pinnacle to the east, one of the most striking features of Fourche Mountain, can be seen from this overlook. The Forest Service operated a fire tower on Wolf Pinnacle until aerial reconnaissance made the tower obsolete.
The Acorn community was an early settlement, formerly known as “gourd Neck”. The name was derived from the shape of the valley, with the “handle” of the gourd lying between Fourche and Rich Mountains. Through this neck pass the headwaters of the Ouachita River, the Kansas City southern Railway, and U.S. Highway 270/59.