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.

Photographer: Barry Swackhamer
Taken: August 12, 2020
Caption: Bretz Floods Marker
Additional Description: Captions: (map, top left) Enormous boulders, some weighing as much as 190 tons, wee "rafted" from as far as Idaho through the Gorge on chunks of ice, then deposited where the waters calmed and the ice melted. Their distribution testifies to the extent of the flooding - some have been found deep within the Willamette Valley.; (photo at center) The story of the great Ice Age Floods was proposed by geologist J. Harlen Bretz in 1923. Although the scientific community rejected his theory at the time, it is now widely accepted.
Submitted: October 19, 2020, by Barry Swackhamer of Brentwood, California.
Database Locator Identification Number: p544633
File Size: 3.416 Megabytes

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