Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.
Marker detail: Ice Age Floods
Photographer: Cosmos Mariner
Taken: July 12, 2015
Caption: Marker detail: Ice Age Floods
Additional Description: The first Ice Age floods were the largest and dirtiest. Carrying rock-laden icebergs and vast amounts of debris, these floods scoured the landscape of vegetation and removed up to 150 feet of topsoil. Floodwaters surged nearly 1,000 feet deep through the Gorge, and farther west they spread out to cover the Portland Basin with 400 feet of water.
Submitted: February 13, 2018, by Cosmos Mariner of Cape Canaveral, Florida.
Database Locator Identification Number: p416590
File Size: 0.227 Megabytes

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