Located in the Modoc National Forest in California.

The 70,385 acre South Warner Wilderness is located on the Warner Mountain Ranger District and contains rugged topography, expansive vistas, rolling hills, mountain meadows, clear streams and the highest peaks in northeastern California. Eagle Peak at 9,892 feet, Warren Peak at 9,710 feet and Squaw Peak at 8,646 feet are conspicuous landmarks in the wilderness. Vegetation on the precipitous mountain slopes is generally sparse. Gentle, rolling topography can be found on the western slopes. Vegetation includes ponderosa, Jeffrey, western white, whitebark and lodgepole pines, white fir, western juniper, aspen, bitterbrush, mountain mahogany, sagebrush and an abundance of wildflowers. The wilderness contains seven lakes. Clear, Patterson and North Emerson provide the best fishing for rainbow, eastern brook, redband and brown trout. There are 79 miles of maintained trail suitable for horses, 23 additional trail miles not maintained. Carry in stock feed. July to mid-October are the best travel times, but severe storms may occur in any month.