This is so cool! Watch as the ice advances over Seattle, Tacoma and Olympia and then retreats during the last 20,000 years.
Vashon Glaciation Animation
Animation of the Vashon Glaciation 20,000 years ago to present. Model developed by Ralph Haugerud with assistance from Harvey Greenberg, content assistance by Brian Atwater, edit and titles by Britta Johnson, and production by Amir Sheikh.
Thanks to John F. Hultquist for this video