The Black River within the park is categorized as a Category One trout production stream by the state.
The park was originally established as a private picnic ground in the early 20th century before being donated to the state.
The ravine features unique microclimates that support hemlock groves, which are increasingly rare in other parts of the region.
The park contains glacial erratics, which are large boulders deposited by melting ice sheets during the last glacial maximum.
It is part of a larger protected greenway corridor that connects to nearby natural preserves in the New Jersey Highlands.
The name 'Hacklebarney' is rumored to have derived from the name of an iron mine that once operated nearby, though documentation remains sparse.
Hacklebarney State Park is a 974-acre natural area centered around the deep, boulder-strewn ravine carved by the Black River. The terrain is defined by steep trails that descend to the river's edge, characterized by hemlock-lined slopes and glacial erratics. Visitors can hike several miles of trails that transition from high-elevation ridgelines to the riparian corridor. Hunting is permitted in designated zones during specific New Jersey state seasons. The park is geographically situated in the glacial highlands of Morris County. It is a site of significant geological interest due to the river's erosion through ancient Precambrian granite and gneiss bedrock.
The wooden bridge crossing the Black River at the base of the ravine.
Wear sturdy, closed-toe hiking boots, as the descent into the ravine is steep and rocky.
Bring trekking poles to assist with navigation on the uneven, slippery riverbank sections.
Check the official New Jersey hunting season schedule before visiting, as some sections may have restricted access during active hunting periods.
Attempting to swim or wade in the Black River, as the currents and hidden boulders make it hazardous.
Carry in, carry out policy for all trash; stay on marked trails to protect the fragile ravine ecosystem; keep pets on a short leash.
