Summerset: Fossil Hunting in Meade County, South Dakota

Updated June 2026

Summerset is a mapped rockhounding spot in Meade County, South Dakota. Reported finds include fossils. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Meade County
State: South Dakota
Postcode: 57718
Coordinates: 44.20462, -103.33130

Geology at Summerset

This spot sits on ground mapped as Lakota Formation that formed roughly 145 to 100 million years ago. Fossils here are typically found in fresh exposures, where erosion keeps bringing new material to the surface.

Mapped unit: Lakota Formation
Age: 145–100 Ma (Early Cretaceous)
Elevation: 3,640 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 Summerset

Best months: March to November. Typical highs run 83°F in midsummer and 36°F in midwinter, with winter lows near 13°F.

Climate normals: NOAA 1991-2020 monthlies, RAPID CITY 4NW station (6 mi away), adjusted for elevation.

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 Summerset

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

Fossils Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Summerset.

Across the state line from Summerset

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

Summerset FAQ

Where is Summerset?+

Summerset is in Meade County, South Dakota, at 44.20462, -103.33130.

What rocks and minerals can you find at Summerset?+

Summerset is reported to produce Fossils.

Is collecting allowed at Summerset?+

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.

What tools should I bring to Summerset?+

A rock hammer, a cold chisel, safety glasses, and newspaper or foam for wrapping finds cover most fossil ground. A trowel and a sieve help in soft exposures.

When is the best time to visit Summerset?+

The most comfortable months at Summerset are March to November.

How do I get to Summerset?+

Open the directions link to navigate to 44.20462, -103.33130 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in South Dakota

See all 43 South Dakota spots →

Open Summerset on the map

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