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New York National Natural Landmarks

Montezuma Marshes - 7/29/2012
A marsh dominated by broad-leaved cattail and including one of the best examples of undisturbed swamp woodlands in NY

Palisades of the Hudson - 8/4/2014
A line of steep cliffs along the west side of the lower Hudson River, rising nearly vertically from near the edge of the river up to 540 feet

Petrified Gardens (Greenfield Center) - 7/24/2019
The site preserves an area of ancient stromatolites (marine algae growths) in a Cambrian rock layer