Roger Denlinger will talk Nov. 8 about what the Mid-Columbia region looked like almost 20,000 years ago.
He will speak at the Ice Age Floods gathering in the auditorium at the Benton Public Utility District building on 10th Avenue and Highway 395 in Kennewick.
Denlinger is a geophysicist with the U.S. Geological Survey's Cascade Volcano Observatory in Vancouver.
He is also one of the main developers of a computer model that simulates the massive Missoula floods, which systematically swept across the Mid-Columbia, forming the landscape.
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The event is free. For more information, call George Last at 946-8050.