The park is known for its old stone walls, furnaces and other remnants of a once industrious ironworking community that now sits next to the swiftly flowing Wanaque River.

The Long Pond Ironworks were added to the National Register of Historic Places on January 11, 1974, for their significance in industry.

A dam at "Long Pond" (Greenwood Lake) provided the waterpower needed to operate a blast for the furnace and a large forge.

This settlement included a church, a store/post office, schoolhouses, and dwellings and outbuildings for workers and managers.

[7] Easily accessible from either the north or the south boat ramp, the area is open throughout the year.