Firehole Lake Drive

Firehole Lake Drive superheated by surrounding thermals

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A road closed last week in Yellowstone National Park after an underground geothermal feature and hot weather combined to melt a portion of it has reopened.

The National Park Service said temporary repairs are complete on Firehole Lake Drive, a 3.3-mile loop off the park’s Grand Loop Road, halfway between Old Faithful and Madison Junction.

Firehole Lake Drive passes through an active thermal area with high ground temperatures, which combined with hot weather last week to damage the blacktop surface.

Park road crews removed some damaged sections of pavement and used a mixture of sand and lime to soak up some of the thick oil that bubbled to the road's surface.

The Park Service said there is no indication of increased hydrothermal activity in the area.

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