Geologic Secrets of America's Tallest Single Dune: Bruneau Sand Dunes, Idaho

Journey up this 470-ft (143 m) massive sand mountain with geology professor Shawn Willsey. Learn why this dune reaches such lofty heights, where its sand comes from, and what role the Bonneville Flood and Snake River played in this area.

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Approximate GPS Location: 44.88612, -115.69852 (dune ridge),
44.89720, -115.68724 (Bonneville Flood silts)

00:00 Introduction
02:05 Formation of Eagle Cove
03:40 Formation of reversing dune
07:49 Dune avalanche lobes
09:22 Dune crest and sand composition
13:53 Bonneville Flood laminated silt