The Great Swamp Professional Review and Guide
"Visit the former 18,000-year-old glacial Lake Passaic, now called the Great Swamp. It doesn’t take long hiking this level loop to learn why it’s designated a National Natural Landmark. Within the 450-acre park’s natural lands, the route meanders through marshes, meadows, swamps, and woodlands, while hugging the Passaic River and series of ponds.
This hike takes us through rich bottomland meadows, once part of a glacial lake. It was prime farmland—and responsible for the park’s name, indirectly. William Alexander, who lived here, was a Lord who died creating a democracy. He was born in 1725 to a wealthy family with a profitable provisioning business. He married Sarah Livingston in 1748; his brother-in-law William Livingston was a future governor. He had land interests in the East Jersey Board of Proprietors, and became one of the founders of King’s College in New York, now Columbia University."