The Grandfather trail traverses the 2.4 miles of ridgeline between Calloway Peak and the Swinging Bridge (Linville Peak), attaining Attic Window and MacRae Peaks along the way. This trail is among the most difficult and technical in the region. In addition to significant steep elevation gain and loss, trail conditions include frequent exposure to very high winds, contiguity to several large cliffs, crossings of cracked boulders, and multiple traverses aided by fixed ladders and cables. This 2.4 miles is normally covered at below half of normal hiking pace. In favorable weather conditions this trail is considered advanced. In poor weather, (throughout the winter and much of spring), this trail should only be attempted by experienced, expert hikers, due to significant formation of ice sheets, accumulation of snow, frequent low visibility, and commonly sub-zero wind chill factors. Significantly, in the early months of 2011, the state park service closed trail access to MacRae peak, something very seldom if ever done under private ownership. The closure notice threatened violators with prosecution under a section of the NC General Statutes.