A road at Yellowstone National Park is melting from extreme heat due to magma underneath a supervolcano. The roads connecting the Old Faithful geyser and the Madison Junction have been closed off to visitors.

“It basically turned the asphalt into soup,” Yellowstone spokesman Dan Hottle said, according to RT. ”It turned the gravel road into oatmeal.”

There are still many other attractions for visitors to see while the danger of seeing Old Faithful is high.

“There are plenty of other great places to see thermal features in the park,” park public affairs chief Al Nash said.“I wouldn’t risk personal injury to see these during this temporary closure.”

The last supervolcano to erupt at Yellowstone was 640,000 years ago, and this one could spew magma more than 240 cubic miles across the surrounding land.

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