Severe melting roads in Yellowstone National Park causes road closures. The park sits on a volcano caldera (a depression in the ground created by the collapse of land after a volcanic eruption), so hot ground temperatures are normal. However, the current conditions are somewhat abnormal
via LA Times:
… Read the rest
The more than 3-mile-long Firehole Lake Drive, an offshoot of the park’s Grand Loop Road located between the Old Faithful geyser and Madison Junction, is closed because melting asphalt has turned it into a “soupy mess,” said park spokesman Dan Hottle.
Firehole Lake Drive provides access to two of the park’s many geysers and a spring–the Great Fountain Geyser, White Dome Geyser and Firehole Lake.