The area of Olympic Wilderness is 3,547.754 square kilometers.
Olympic Wilderness was created on 1988-11-16.
The area of Siffleur Wilderness Area is 412.14 square kilometers.
The area of Pepperbox Wilderness Area is 91.297 square kilometers.
Frank Church - River of no Return Wilderness Area.Gospel Hump Wilderness Area.Hells Canyon Wilderness Area.Sawtooth Wilderness Area.Selway-Bitterroot Wilderness Area.
The area of Shellback Wilderness is 146.266 square kilometers.
Siffleur Wilderness Area was created in 1961.
Wolkberg Wilderness Area was created in 1977.
The area of Lostwood Wilderness is 22.569 square kilometers.
The area of Bridger Wilderness is 1,732.738 square kilometers.
The area of Rattlesnake Wilderness is 133.449 square kilometers.
The area of Gila Wilderness is 2,258.203 square kilometers.
The area of Buckhorn Wilderness is 179.106 square kilometers.