2—Lake Missoula and Cataclysmic Floods
Major flooding and other geological forces that occurred during the Pleistocene Age formed the Columbia River. This site highlights these amazing processes. When you have finished exploring, click here to read a story about a fascinating region known as Dry Falls.

When you're done exploring, you can return to the original page by clicking the Return to Tour button on the control panel to the right of this frame.

Click the Next button to go to the next stop.

The address (URL) of the current site is: http://www.fs.fed.us/r6/columbia/forest/geology/

If you'd like to see this site without our frames, click here to open a new browser window. When done, close the extra window to continue with the tour.