Best spot

Lime Kiln Park — Rockhounding in Ozaukee County, Wisconsin

Lime Kiln Park near Grafton preserves two small Silurian reefs in the walls of a former limestone quarry along the Milwaukee River. The Field Museum records favositid and halysitid corals, stromatoporoids, brachiopods, and nautiloid cephalopods in the exposed dolomite. The park is a free Ozaukee County facility with interpretive trails through the old quarry and kiln ruins. Reported finds include fossils, coral, crinoids, dolomite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Lime Kiln Park photos

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

1 photo

Historic lime kiln ruins at Lime Kiln Park, Grafton, Ozaukee County, Wisconsin

Quick details

Access: Public area
County: Ozaukee County
State: Wisconsin
Nearest road: Green Bay Road
Postcode: 53024
Coordinates: 43.32250, -87.94400

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 Lime Kiln Park

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 Lime Kiln Park.

Across the state line from Lime Kiln Park

Lime Kiln Park is close enough to the Wisconsin border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Charles Mears State Park BeachTop pick in MichiganOceana County, Michigan · 79 mi awayPetoskey Stones, Agate, Fossils

Lime Kiln Park FAQ

Why is Lime Kiln Park one of the best rockhounding spots in Wisconsin?+

Where is Lime Kiln Park?+

Lime Kiln Park is in Ozaukee County, Wisconsin, at 43.32250, -87.94400. Nearest road: Green Bay Road.

What rocks and minerals can you find at Lime Kiln Park?+

Lime Kiln Park is reported to produce Fossils, Coral, Crinoids, Dolomite.

Is collecting allowed at Lime Kiln Park?+

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 Lime Kiln Park?+

Open the directions link to navigate to 43.32250, -87.94400 in Google Maps. The nearest road is Green Bay Road.

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