Yellowstone National Park winter wonderland

Yellowstone National Park (YNP) was the first national park in the U.S., and at the same time, is the first in the world. Possessing the Earth’s largest active geyser, Old Faithful was deemed a UNESCO World Heritage site in 1979. Old Faithful’s last eruption was over 600,000 years ago. The caldera has gradually filled with lava flow, resulting in most of the caldera being filled. However, volcanic activity is still present which heats up ground water creating the current thermal […]

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