In mid-August, new hubby trs and I took our teenage daughter to Yellowstone and Grand Tetons National Parks. Yellowstone is the site of a huge volcanic caldera caused by the most recent eruption of a still active volcanic hot spot (this neat interactive shows the location of the hot spot in relation to the overlying land over time.)
Yellowstone still shows evidence of the magma pool below it, with 1000 to 3000 earthquakes per year. It's this magma that's responsible for Yellowstone's primary attractions: the largest collection of geothermal features like hot springs, geysers and steam vents in the world.
Stream rising from a pool at Midway Basin by iriti
continued at Daily Kos....
