Hanging Lake, CO

[ashling]

Hanging Lake is at the heart of the new Hanging Lake National Natural Landmark, part of the White River National Forest near Glenwood Springs, Colorado.

The 72-acre (29-hectare) site, a popular hiking spot, is an outstanding example of a lake formed during the creation of travertine, a crystalline form of calcite, according to the Department of the Interior.

This type of rock develops when calcium carbonate precipitates—or settles out—from mineral-rich water, so travertine is often found around hot springs and streams, according to Florida State University.

The Colorado lake and its associated waterfalls also support a rare wetland ecosystem, including hanging gardens.