The Cinnabar Creek area includes the tract on the divide between the Aniak and Holitna Rivers, both north-flowing tributaries of the Kuskokwin River (see figs. 1 and. 2), in the southern parts of the Georgetown and Akiak districts, southwester Alaska, about 85 miles S. 25° W. of Georgetown. The area.(see fig. 3.) is chiefly one of steep, rock-crested hills and the average relief is _about 700 feet. Some of the uplands are gently rolling but are studded here and there with sharp outcrops. The hills are covered largely by moss but the lower reaches of the valleys within the area are forested with spruce. Small alders and willows, and locally rather large cottonwoods, predominate in the gulches near timberline, which is about 1,000 feet above sea level.