Moggy Hollow Natural Area

Moggy Hollow Natural Area is a protected natural landmark in Somerset County featuring a steep ravine carved through rock formations with a flowing stream and wetland at its base. The site displays layered geology and vegetation adapted to the moist, sheltered conditions within the hollow.

This location served as an outlet for Glacial Lake Passaic during the Wisconsin Glacial Stage roughly 50,000 years ago, with water flowing through the site for over 2,000 years. The persistent erosive action of this ancient waterway carved the deep ravine that exists today.

The land was donated by J. Malcolm Belcher, former Far Hills mayor, to the Raritan Headwaters Association for scientific and educational purposes.

Access to the upper ledge is available from Liberty Corner Road, while visiting the lower section requires permission to cross the nearby Leonard J. Buck Garden. Proper footwear with good grip is essential since the terrain is steep and surfaces become slippery after rain.

The site was donated by J. Malcolm Belcher, a former mayor of Far Hills, to the Raritan Headwaters Association specifically for scientific research and education. This gift of private land helped ensure this geological formation would be protected for future study and discovery.

Location: Somerset County

GPS coordinates: 40.67350,-74.61410

Latest update: December 9, 2025 20:28