White Rocks: Cryptomelane & Goethite Rockhounding in Cumberland County, Pennsylvania

Updated July 2026

White Rocks is a mapped rockhounding spot in Cumberland County, Pennsylvania. Reported finds include cryptomelane, goethite, fluorite, quartz, tourmaline, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Check locally
County: Cumberland County
State: Pennsylvania
Nearest road: Kuhn Road
Postcode: 17007
Coordinates: 40.13268, -77.08866

Geology at White Rocks

This spot sits on Tomstown Formation, mapped as dolostone that formed roughly 540 to 485 million years ago. Carbonate rock like this dissolves and weathers readily, so fresh road cuts, quarries, and creek exposures are typically the most productive ground.

Mapped unit: Tomstown Formation
Age: 540–485 Ma (Cambrian)
Rock types: dolostone
Elevation: 620 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit White Rocks

Best months: March to November. Typical highs run 85°F in midsummer and 37°F in midwinter, with winter lows near 20°F.

Climate normals: NOAA 1991-2020 monthlies, CARLISLE WTP station (8 mi away), adjusted for elevation.

Land & collecting status

Confirm rules before collecting

Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ.

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 White Rocks

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 White Rocks.

Across the state line from White Rocks

White Rocks is close enough to the Pennsylvania border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

White Rocks FAQ

Where is White Rocks?+

White Rocks is in Cumberland County, Pennsylvania, at 40.13268, -77.08866. Nearest road: Kuhn Road.

What rocks and minerals can you find at White Rocks?+

White Rocks is reported to produce Cryptomelane, Goethite, Fluorite, Quartz, Tourmaline, Zircon.

Is collecting allowed at White Rocks?+

Confirm rules before collecting. Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ. Always confirm current rules with the managing agency before a trip.

What tools should I bring to White Rocks?+

A rock hammer, a small pry bar, gloves, and safety glasses cover most crystal ground. A screen helps in loose pocket soil, and newspaper protects points on the way out.

When is the best time to visit White Rocks?+

The most comfortable months at White Rocks are March to November.

How do I get to White Rocks?+

Open the directions link to navigate to 40.13268, -77.08866 in Google Maps. The nearest road is Kuhn Road.

More rockhounding in Pennsylvania

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Open White Rocks on the map

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