Moggy Hollow Natural Area

Geology

The Wisconsin glacier expanded and closed off lower height gaps to the north, forming Lake Passaic. As the lake continued to grow to a maximum depth around 240 ft, it found its outlet out of the basin at Moggy Hollow at the western edge of the lake. The ledge of harder basaltic rock at 331 ft above sea level served as a spillway for Lake Passaic carving a deep ravine out of the softer soil as the lake drained. Even as the glacier retreated, Moggy Hollow remained the main outlet due to debris left at Millburn until Little Falls and Paterson emerged from the ice. There were several post glacial lakes which formed above Moggy Hollow, bringing the ledge to its current height.

History

The property is owned and managed by the Raritan Headwaters Association. Most of the current site was donated to the association on November 4, 1967, by J. Malcolm Belcher, a former mayor of Far Hills, on behalf of the Belcher family. The remainder of the site was acquired from Leonard J. Buck.

Visiting

The ravine is located adjacent to and above the Leonard J. Buck Garden. Visitors can either ask to cross the Buck Garden to reach the lower portion of the ravine, or park above on Liberty Corner Road to access the top of the ledge. Portions of the hollow are steep and dangerous.

References

References

1. (Feb 5, 2004). "National Natural Landmark Summary". [[National Park Service.
2. "Moggy Hollow at Leonard J. Buck Garden". Somerset County Park Commission.
3. Bowman, Ph. D, Isaiah. (1911). "Forest Physiography". The New York Times.
4. Salisbury, Rollin D.. (1898). "The Physical Geography of New Jersey". The John L. Murphy Pub. Co., Printers.
5. "Moggy Hollow, Partner of a Glacier, A Sight to Still Behold.". Passaic River Coalition.
6. Waggoner, Walter H.. (November 5, 1967). "Geologic Rarity Saved in Jersey: Moggy Hollow turned over to watershed group". New York Times.
7. "Hiking Moggy Hollow". www.nynjctbotany.org.