A large regional rug, second quarter of the 20th c

A large regional rug, second quarter of the 20th century. Ganado/Klagetoh region, woven of native handspun wool with aniline dye with a series of stepped stacked half diamond and rectangle elements in red, camel, gray and dark brown against an ivory field all enclosed within a simple dark brown border; 111 ¼ x 70 ½ inches