The Rocks that Came from Ancient Sea Life

MN90: Minnesota History in 90 Seconds · Jul 30, 2026 · 1m

There are rocks in Northern Minnesota that are older than you think. MN90 producer Britt Aamodt finds out they weren’t always rocks either.

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Producer: Britt Aamodt

Editorial support: Emily Krumberger

Mixing & mastering: Chris Harwood

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