Haunted Ridge Rocks: Rockhounding in Washington County, Missouri

Updated June 2026

Haunted Ridge Rocks is a mapped rockhounding spot in Washington County, Missouri. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Paid / fee dig
County: Washington County
State: Missouri
Nearest road: Roderick Road
Postcode: 63630
Coordinates: 38.00697, -90.67846

Geology at Haunted Ridge Rocks

This spot sits on Eminence Dolomite, Potosi Dolomite, mapped as dolostone that formed roughly 495 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: Eminence Dolomite, Potosi Dolomite
Age: 495–485 Ma (Furongian)
Rock types: dolostone
Elevation: 840 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 Haunted Ridge Rocks

Best months: February to December. Typical highs run 87°F in midsummer and 41°F in midwinter, with winter lows near 23°F.

Climate normals: NOAA 1991-2020 monthlies, POTOSI 4 SW station (12 mi away), adjusted for elevation.

Land & collecting status

Pay-to-dig site

This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.

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.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Haunted Ridge Rocks.

Across the state line from Haunted Ridge Rocks

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

SpartaTop pick in IllinoisRandolph County, Illinois · 52 mi awayPyrite, Fossils

Haunted Ridge Rocks FAQ

Where is Haunted Ridge Rocks?+

Haunted Ridge Rocks is in Washington County, Missouri, at 38.00697, -90.67846. Nearest road: Roderick Road.

What rocks and minerals can you find at Haunted Ridge Rocks?+

Haunted Ridge Rocks is on the rockhounding map but no minerals are listed in our reference. Open RockHoundR to see what other rockhounds have logged.

Is collecting allowed at Haunted Ridge Rocks?+

Pay-to-dig site. This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Haunted Ridge Rocks?+

A rock hammer, sturdy gloves, safety glasses, and a collecting bag cover the basics here. Add a spray bottle: wet rock shows color and pattern that dry rock hides.

When is the best time to visit Haunted Ridge Rocks?+

The most comfortable months at Haunted Ridge Rocks are February to December.

How do I get to Haunted Ridge Rocks?+

Open the directions link to navigate to 38.00697, -90.67846 in Google Maps. The nearest road is Roderick Road.

More rockhounding in Missouri

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Open Haunted Ridge Rocks on the map

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