Hunterdon County, NJ

The park bulletin for Echo Hill Environmental Education Areas says:

Encompassing almost 950 acres as it winds its way along the ever changing scenery of the South Branch of the Raritan River, the reservation was established to preserve the river and its environment, enabling outdoors enthusiasts to take advantage of fishing and canoeing activities. Abandoned railroad right-of-ways, iron truss and trestle bridges, evergreen bluffs, old farm fields, and the largest marsh in Hunterdon County are just some of the sights to encounter throughout sections of the South Branch Reservation.