In my travels online today, I ran across a reference that took me to another reference that eventually led me to the Yellowstone Volcano Observatory home page. There is some very interesting information here as well as some spectacular pictures and maps. One map in particular shows the areas of US that were probably covered by Ash from Yellowstone's last few eruptions over the last 2 million years. I can't imagine just how catastrophic that would be today: http://volcanoes.usgs.gov/yvo/figures/fig3.html
Yellowstone Volcano Observatory home page http://volcanoes.usgs.gov/yvo/index.html _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
