Heart Lake is a small alpine lake in Elmore County, Idaho, in the Sawtooth Mountains of the Sawtooth National Recreation Area. The lake is accessed from Sawtooth National Forest trail 461.Sawtooth National Forest. “Sawtooth National Forest” [map].1:126,720, 1”=2 miles. Twin Falls, Idaho: Sawtooth National Forest, United States Forest Service, 1998.
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