National Natural Landmarks
Diamond Head is one of the best exposed and preserved examples of a typical volcanic cone of altered basaltic glass. It shows the bedding structure of the cone and the character of the rock.
Location: Oahu Island, HI
Year designated: 1968
Ownership: Federal, State
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.