Washington State

Hole in the Ground
"Hole in the Ground" at Rock Creek - Undersized stream shows floods activity.

NPS

Washington state is a big part of the Ice Age Floods National Geologic Trail and there are many places to go and sights to see. Explore the content below to better understand how the Ice Age floods impacted Washington state.
 
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    Last updated: July 12, 2023

    Contact Info

    Mailing Address:

    Program Manager
    Ice Age Floods National Geologic Trail
    1008 Crest Drive
    Coulee Dam, WA 99116

    Phone:

    (509) 237-9722

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