Geological development

 Every time I resume my blog it takes a while for me to remember how to post photos. Hence the delay. Much easier to post on FB.  Anyway, going back about 17 million years, volcanic eruptions covered the entire Snake and Columbia River valleys and tens of thousands of square miles in lava flows. Then a mere million years ago a series of glacial lake floods (Missoula floods) carved, created and displaced the Columbia and Snake into what they are today. Basalt rock can be seen along the sides of the Hells Canyon area of the Snake River.


 

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