Emerald Lake is a small
lake near the summit of
Mount Timpanogos in
Utah's
Wasatch Range. It is northeast of the summit, at the base of the almost vertical northeast face of the mountain. The now mostly vanished and completely buried
Timpanogos Glacier left behind a terminal
moraine which now impounds the lake. The runoff from the
rock glacier feeds the lake and colors it blue. The lake is accessible by
hiking, the Aspen Grove trail being the fastest way to reach it; it is about 5 miles, (or two-thirds) up that trail on the way to the summit.