Only a few lakes exist, but the streams contain cutthroat, brown, brook, and rainbow trout. The region is home to grizzly bears, so precautions are in order. Big-game hunters come by the hundreds for bighorn sheep, elk, and moose. Marmots and pikas reign on numerous talus slopes. Summers are relatively dry, and flies and gnats may disturb your serenity.
Mosquitoes are generally few and far between.
Some of the trails will take you far from water. A limited number of appealing campsites has created some overuse at the desirable places.