Halfway Rock Light occupies an isolated ledge in Casco Bay, Maine, between Cape Elizabeth and Cape Small, where dangerous conditions caused wrecks and finally led to construction of a lighthouse begun after 1861 and first lit in 1871. Repeated storms and the station’s exposed setting made life and maintenance difficult, leaving the 76-foot tower and attached former boathouse as the main surviving structures. Its equipment evolved from a third-order Fresnel lens and fog bell to newer technology, and the light was automated in 1975. Later storm damage, preservation efforts, and private restoration have made it one of Maine’s most striking offshore lighthouse sites.