Great Thunderegg Hunt

Rice Northwest Museum of Rocks & Minerals · Rice Northwest Museum of Rocks & Minerals, 26385 NW Groveland Dr,Hillsboro, OR

Saturday, Apr 4th, 2026 · Rice Northwest Museum of Rocks & Minerals

10 AM – 3 PM — Rice Northwest Museum of Rocks & Minerals — Ticket required — Hunt for thundereggs and mystery minerals while enjoying interactive geological activities.

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Great Thunderegg Hunt

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Great Thunderegg Hunt

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