The Wildlife Preserves, Johnsonburg Preserve is located in Frelinghuysen Township in Warren County.
The Johnsonburg Preserve contains a natural pond known as Mud Pond which is considered a prime example of a limestone sink. Remnants of an old dairy farm are also found on the property. It contains an old log cabin and well maintained hiking trails. It is often used by the Boy Scouts of America for field trips, summer camping in the meadows and winter cabin camping. It adjoins the Nature Conservancy, Johnsonburg Preserve.
Directions for GPS users - The Johnsonburg Preserves' mailing address is: 12 Old Stage Road, Newton, NJ. Park anywhere on old Stage Road, do not block gate. Enter on foot and follow the road all the way past the cabin, past the old barns to the pond. There are trails up to scenic vistas overlooking the pond.