Road melts at Yellowstone National Park

The road was melting.
Extreme heat from thermal features at Yellowstone National Park, created by the active volcano below the park, caused oil to bubble on a road surface on July 9 and damage it.
Park crews had to close and repair the 3.3-mile loop road that takes visitors past White Dome Geyser, Great Fountain Geyser and Firehole Lake.
A road in Yellowstone National Park simmers in the heat of underground thermal features.
Yellowstone National Park/AP
Yellowstone National Park was the nation's first national park, established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872. It's predominantly in Wyoming but also touches Idaho and Montana. Check in next week for Arches National Park.
Illustration by Stewart Scott-Curra
Extreme heat from thermal features at a Yellowstone National Park volcano caused part of a road to melt.
Yellowstone National Park -- a UNESCO World Heritage Site -- sits atop one of the world's largest volcanoes, and some of the thermal spots have damaged the popular Firehole Lake Drive. The park features over 10,000 thermal spots, about half the world's known thermal spots.
Although the volcano is active -- evidenced by the thermal features and 1,000 to 3,000 earthquakes annually -- park officials don't expect a catastrophic eruption anytime in the next 1,000 or even 10,000 years.
Yellowstone's first supervolcanic eruption occurred 2.1 million years ago, and there were other Yellowstone supereruptions 1.3 million and 640,000 years ago.
The park has instruments monitoring the volcano throughout the park, and there would be plenty of warning -- weeks or even months -- if an eruption were going to occur.
In the meantime, enjoy the park! Maintenance crews quickly repaired the road, and it was reopened to visitors Saturday.
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