Hanging Lake is a unique example within the Southern Rocky Mountains biophysiographic province of a lake formed by travertine deposition. It is one of the larger and least altered travertine systems in the province, where natural geologic and hydrologic processes continue to operate as they have done throughout the history of the lake. The site also supports one of the best and largest examples of a hanging garden plant community in the province.
Year designated: 2011
Please remember, National Natural Landmarks (NNLs) are not national parks. NNLs are owned by a variety of public and private entities and allowing visitation is at their discretion. Many NNL sites maintain public websites where additional information may be found.