RockHoundR
Download on the App StoreGet it on Google Play
Best spot

Tunnel Brook — Rockhounding in Grafton County, New Hampshire

Updated July 2026

Tunnel Brook is a long-favored gold-panning stream in the White Mountain National Forest, and coarse gold with the occasional small nugget has turned up in its gravels where it drops over fractured bedrock. It flows into the Wild Ammonoosuc near Route 112 in the heart of New Hampshire's historic gold district. A free Forest Service permit covers panning here. Reported finds include gold placer, gold nugget. Below: coordinates, access notes, nearby spots, and trip-planning links.

Tunnel Brook photos

Public image records connected to this spot or its reported material.

1 photo

Map showing Tunnel Brook in Grafton County, New Hampshire

Quick details

Access
Public area
Nearest road
Tunnel Brook Road

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Tunnel Brook

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Tunnel Brook.

Across the state line from Tunnel Brook

Tunnel Brook is close enough to the New Hampshire border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Tunnel Brook FAQ

Why is Tunnel Brook one of the best rockhounding spots in New Hampshire?+
Tunnel Brook is a long-favored gold-panning stream in the White Mountain National Forest, and coarse gold with the occasional small nugget has turned up in its gravels where it drops over fractured bedrock. It flows into the Wild Ammonoosuc near Route 112 in the heart of New Hampshire's historic gold district. A free Forest Service permit covers panning here.
Where is Tunnel Brook?+
Tunnel Brook is in Grafton County, New Hampshire, at 44.09300, -71.90000. Nearest road: Tunnel Brook Road.
What rocks and minerals can you find at Tunnel Brook?+
Tunnel Brook is reported to produce Gold Placer, Gold Nugget.
Is collecting allowed at Tunnel Brook?+
Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.
How do I get to Tunnel Brook?+
Open the directions link to navigate to 44.09300, -71.90000 in Google Maps. The nearest road is Tunnel Brook Road.

More rockhounding in New Hampshire

See all 38 New Hampshire spots →

Open Tunnel Brook on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.

Download on the App StoreGet it on Google Play