The 1,417 acres (5.73 km2) Ramapo Lake Natural Area within the park has several trails to excellent views from rock outcroppings and ledges.

It is part of a trail system which runs along the ridge of the Ramapo Mountains north through Mahwah, New Jersey and into Rockland County, New York.

In the 1920s Clifford MacEvoy began buying up property and deeds to form the Bergen Country Hunting and Fishing Club.

At about this time, a small pond located on the property called "Roten" pond (Dutch for muskrat), was dammed up to form the much larger Ramapo Lake, and some small parcels of land surrounding the lake were sold to private buyers for building lots, one including a television celebrity, lawyer and noted author.

In 1924, at the top of the mountain he built a granite, brick and stucco manor house, designed by Mr. MacEvoy for his wife and his daughter.

A hatch on the fifth floor leads to a roof with incredible views of Ramapo Park and Lake, the Wanaque Reservoir, mountains to the west and to the east, New York City.