Ramsey Canyon is a stream-cut, vertical-sided gorge. Cold air drainage from the upper canyon results in a well-defined microclimatic habitat that supports Mexican flora and fauna and plants that normally occur only at higher elevations. The site is also frequented by more species of hummingbirds than any other area in the United States.
Year designated: 1965
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.