Denali National Park has closed to visitors due to the rapidly spreading Riley Fire near its entrance, prompting evacuations and a significant firefighting response.
There are over one hundred and forty landslides along the Denali Park road, the 92 mile road through Denali National Park and Preserve. None are more threatening than the Pretty Rocks Landslide at Polychrome Pass.
Kettle ponds in Denali National Park contain less water this spring than in previous years, due to low snowfall and permafrost thaw. Shrubs are replacing grasses as the lakes dry.
Of the 140 unstable slopes along the 92-mile park road, Pretty Rocks has the most potential to disrupt traffic.
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