​NOW, A little about the VOLCANOES:  Columbia River Basalt Group (also known as, CRBG)

Volcanoes.

​17 to 6 million years ago--

​
KAAAAAAAAH 

​BOOOOOOOOOM

PAUSE

PAUSE
​
​PAUSE AND PLAY AUDIO, OF THE COLUMBIA RIVER BASALT FLOODS ERUPTIONS, MILLIONS OF YEARS AGO.

... ...      ...