Established in 2003, the park covers 470 hectares of the central portion of the Tuamasaga district of Upolu and includes three volcanic crater-lakes: Lake Lanoto'o, Lanoata’ata and Lanoanea.

In 2004 it was designated as a wetland of international importance under the Ramsar Convention.

The park contains three highland crater-lakes and surrounding marsh and forest.

[1][4] The site is also important for the Pacific black duck and Spotless crake, and provides habitat for the Red-headed parrotfinch, Crimson-crowned fruit dove and Flat-billed kingfisher.

[2] Lake Lanoto'o itself is home to introduced Goldfish.