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http://www.cbsnews.com/stories/2004/03/23/eveningnews/main608243.shtml
..."The bottom line is we still don't know all that much about what's going on at Yellowstone," says Heasler.
So he takes the job of keeping visitors safe seriously, constantly monitoring temperatures.
And that's not always easy. A trail near the Norris Geyser was closed last summer and is still boiling hot enough to burn through shoes. [continued]
Gives me ideas of new winter sports for snowmobilers.a massive bulging dome the size of seven football fields
The "Yellowstone's Explosive Secret" refers to the discovery of a massive supervolcano located underneath the Yellowstone National Park in the United States. This supervolcano has the potential to cause a catastrophic eruption that could have a global impact.
The supervolcano under Yellowstone is estimated to be about 55 miles long, 20 miles wide, and 9,000 feet deep. It is one of the largest known supervolcanoes in the world and is capable of producing an eruption that is thousands of times more powerful than a typical volcanic eruption.
The last major eruption of the supervolcano under Yellowstone occurred approximately 640,000 years ago. However, there have been smaller eruptions and volcanic activity in the area since then, with the most recent one happening about 70,000 years ago.
If the supervolcano under Yellowstone were to erupt, it would release a massive amount of ash, gas, and rock into the atmosphere, causing widespread destruction and potentially affecting the Earth's climate. The initial blast would be followed by years of volcanic activity and ash fall, which could have a significant impact on the environment and human life.
Currently, there is no way to accurately predict when the supervolcano under Yellowstone will erupt. Scientists closely monitor the area for any signs of increased activity, such as earthquakes or changes in gas emissions. However, it is impossible to predict an eruption with certainty, and it could happen at any time, whether it be in the near future or thousands of years from now.