Hell Roaring Lake, Glacial lake in Sawtooth Mountains, Idaho.

Hell Roaring Lake is a glacial lake in the Sawtooth Mountains, located within the Sawtooth National Recreation Area in central Idaho. The lake feeds into Hell Roaring Creek, which eventually connects to the Salmon River downstream.

The lake formed thousands of years ago when glaciers carved through the Sawtooth Mountains during the last ice age. This glacial activity shaped the valleys and ridges visible in the landscape today.

Hell Roaring Lake sits in the Sawtooth Wilderness, where visitors must carry a wilderness permit obtained at the trailheads. The name pairs "Hell Roaring" with a lake fed by Imogene, Profile, Mushroom and Lucille lakes upstream, a naming contrast hikers notice on the map before the climb.

Two trail options lead to the lake: one trailhead requires a high-clearance vehicle, while the other is accessible by standard car. Plan to start your hike early in the day, as the route takes several hours to complete.

Finger of Fate, the peak rising to 9,780 feet (2,981 m) above the lake, is named on maps of the Sawtooth Wilderness. The lake sits at 2,259 m and covers about 0.17 square kilometres, stretching roughly 0.6 km north to south and 0.7 km east to west. Upstream lie Imogene, Profile, Mushroom and Lucille lakes.