Tri-Mountain State Park is an isolated public recreation area in Wallingford and Durham, Connecticut, covering parts of Fowler Mountain and Trimountain. Lacking road access, it can be reached only by the Mattabesett Trail. The park originated in 1925 when Wallingford resident John B. Kendrick donated a six-acre tract on the summit of Trimountain’s southern peak. Kendrick had purchased the land in 1906 for protective purposes, and his gift formed the foundation of the park.