The agricultural communities of what now comprise Parsippany-Troy Hills were settled in the mid-18th century, but time has destroyed many of the artifacts of early years.
Evidence of rock shelters once used by the Lenni-Lenape Indians is still present, but the farms that once existed have been replaced by modern developments. Lake Passaic, formed by a receding ancient glacier, once covered Parsippany-Troy Hills; this geological phenomenon left behind fascinating rock formations and a rich, fertile soil. Follow the history of this New Jersey township from early farmland into a bustling, modern city.