The Highlands Natural Pool is in Ringwood, New Jersey, United States. This swimming pool is located in the Wyanokie Highlands adjacent to the Norvin Green State Forest. The pool is a stream-fed non-chemically-treated swimming pond with stone retaining walls and a safe children’s area. Annual memberships and daily visitors passes are available to the general public. In 1921, Camp Midvale was founded as a haven for working people seeking refuge, recreation, community, and nature by a group of outdoor enthusiasts called the Nature Friends (Naturfreunde). In 1935, Nature Friends volunteers carved the present swimming pool out of the hillside by hand.