Riverhead topographic map

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Jayne's Hill (also known as High Hill, West Hills, Oakley's Hill, and Janes Hill) is the highest point on Long Island, New York, with an elevation of between 387 feet (118 m) and 400.9 feet (122.2 m) above sea level. It is situated on the Harbor Hill moraine, a terminal moraine that makes up the northern spine…

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