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South Dakota

Prairie Agate, Buffalo Gap National Grassland

Agate beach or gravel Documented siteLegal to collect

What you could find

Reported finds from this ground.

Agates and jasperAgates and jasper

Photos via Wikimedia Commons: Teerui (Public domain).

Why this spot

Oligocene White River gravels

Widespread agate hunting across the grasslands.

Keep exploring nearby

More spots in this area.

Check access and collecting rules for each site.