West Rock Ridge or West Rock of south-central Connecticut, is a 7-mile (11 km) long trap rock mountain ridge located on the west side of New Haven with a high point of 700 feet (213 m) at High Rock, also known as York Mountain. The ridge forms a continuous line of exposed cliffs visible from metropolitan New Haven and points west. West Rock Ridge is part of the narrow, linear Metacomet Ridge which extends from Long Island Sound near New Haven north through the Connecticut River Valley of Massachusetts to the Vermont border.

New Haven is a city in New Haven County, Connecticut, United States. It is located on New Haven Harbor on the northern shore of Long Island Sound and is part of the New York City metropolitan area. With a population of 135,081 as determined by the 2020 U.S. census, New Haven is the third largest city in Connecticut after Bridgeport and Stamford, the largest city in the South Central Connecticut Planning Region, and the principal municipality of Greater New Haven, which had a total population of 864,835 in 2020. Prior to 1960, it was the county seat of New Haven County until the county governments were abolished that year.