The Harcuvar Mountains (Yavapai: Ahakuwa) are a narrow mountain range in western-central Arizona, United States. The range lies just east of the north-south Colorado River, and south of the east-west, west-flowing Bill Williams River, from Alamo Lake. The range is part of a three-range sequence of mildly arc-shaped ranges, and two intermountain range valleys in the Maria fold and thrust belt, a region in western-central Arizona and southeast Southern California, with the Colorado River flowing south through the western part of the belt. The fold-and-thrust-belt region contains numerous plains, valleys, and mountain ranges, about 30 landforms in all. The range is a narrow range about 25 mi long, and 5 mi wide, and trends southwest to northeast. The McMullen Valley is the southeast border of the range, and is traversed by U.S. Route 60. Four peaks are found in the range; the highest peak is Smith Peak (Arizona), in the northeast, but not easily accessible by road. In the southwest, is Harcuvar Peak, at , accessible by unimproved road, via Cottonwood Pass. Two other peaks lie in the center of the range; one lies adjacent and north of Cunningham Pass, called ECC Peak, at , and further northeast, ECP Peak, at . In 1990, the Harcuvar Mountains Wilderness became part of the now over 109 million acre National Wilderness Preservation System established by the Wilderness Act of 1964. The Harcuvar Mountains Wilderness is in northeast La Paz County 82 miles northwest of Phoenix, Arizona. Regional access One of the more important aspects of the Harcuvar Mountains is the major, and southern access route to Alamo Lake State Park approximately upriver on the Bill Williams River. The access road is the southern access to the lake, about 30 miles of unimproved road. It begins at Wenden, Arizona, and immediately climbs through the Harcuvars to Cunningham Pass. Another 24 miles traverses the Butler Valley's northeast, and the flatlands northeast of the Buckskin Mountains. The entire southeast perimeter of the Harcuvar Mountains borders the McMullen Valley, with U.S Route 80. The series of communities starting at the southwest are Vicksburg, Hope, and Harcuvar, (also located south of a small range, the Granite Wash Mountains), then Salome, Wenden, and lastly after a straight stretch, Aguila. At Aquila roads connect either northeast, or east to U.S. Route 93, the road to Kingman–Phoenix Three major thrust-faulted ranges The major mountain ranges that run southeast to northwest