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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. Support geology education via: PayPal: https://www.paypal.com/donate/?hosted... or Buy Me: https://buymeacoffee.com/shawnwillsey or Venmo: @shawn-willsey or click on the "Thanks" button above or a good ol' fashioned check to: Shawn Willsey 148 Blue Lakes Blvd N #141 Twin Falls, ID 83301 Willsey website: https://www.willseygeology.com/ Willsey merch store: https://geologyexplained-shop.fourthw... 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