Troy Meadows is a 3,100-acre (1,300 ha) nature preserve in Parsippany-Troy Hills, Morris County, New Jersey. Along with the Great Swamp, it is one of the remnants of Glacial Lake Passaic. It was designated a National Natural Landmark in 1967.[1] It is the largest freshwater marsh in New Jersey, the Whippany River goes through the swamp before connecting with the Rockaway River.[2]
Inside the marsh, there is a two mile boardwalk.[3]