It's a geological mystery and a rare spectacle of Nature at the world's first National Park. Yellowstone National Park occupies over 2.2 million acres of land in Wyoming, Montana and Idaho – larger than Rhode Island and Delaware combined! The park's famously magnificent vistas include forests, lakes, waterfalls and petrified forests, all home to a treasure of American wildlife.

But beneath its surface beauty, that's where Yellowstone National Park gets even more interesting. It's over top of a giant volcanic hotspot, which has created over 10,000 thermal (heat-related geological) 'features', and more than 300 geysers.

The conditions that create geysers are rare. Yellowstone is one of the few places on earth where you see them. Geysers erupt when magma (underground molten rock from volcanic activity) heats up gas and water trapped below ground until they erupt like a teapot coming to boil. The hot water and gas generate enough pressure to break the surface of the earth and gush upwards in a tower of water that lasts minutes, followed by days of steam continuing to release.

That's what's happened at least 4 times in just a couple of months during the spring of 2018 at the park's Steamboat Geyser (photo credit). Each time, about 70,000 gallons of water have erupted from the world's tallest geyser, where powerful eruptions can spew steaming hot water over 300 feet into the air.

Like most geysers, Steamboat is completely unpredictable. Yellowstone's most famous geyser, 'Old Faithful', fulfills the promise of its name and erupts almost on clockwork every hour or so, and you can even monitor them on the dedicated Twitter feed created by the National Park Service. Scientists think Old Faithful's predictability is due to a simple underground structure, whereas Steamboat's structure is believed to be more complex, and the magma movement irregular.

In fact, it's the first time in 15 years that Steamboat has erupted 3 times in one year. The last time it erupted at all was in 2014. But in 1964, Steamboat erupted a record 29 times!

The truth is, other than general knowledge of how the park's underground volcanic activity activates geysers, scientists don't know for sure why Steamboat has started erupting again – or why it has already blown four times in a couple of months.

So the show may not be over.

That's why this might be the best year to make a trip to Wyoming and Yellowstone National Park; for the possibility of witnessing a rare display by Mother Nature you won't see many other places on the planet.

Let us help you plan a trip to Yellowstone and other National Parks in America's West this year; tour packages bring you to the heart of Yellowstone National Park, and hopefully, you'll have a once-in-a-lifetime experience with Yellowstone's famous geysers. Start your Trip!

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