Massive landslide covers stretch of National Park road in Alaska popular with tourists

A massive landslide in Denali National Park in Alaska rained tons of rock and soil on parts of a road that attracts scores of tourists each summer.

Crews began clearing the 200-foot stretch of Denali Park Road Friday, but park officials say it's not immediately clear if road damage or instability of the terrain will affect visitors next summer. Officials say crews will take advantage of unseasonably mild weather conditions, working seven days a week as long as possible.

The slide debris is piled in depths of up to 35 feet. That part of the road, 37 miles in, is already closed this time of year. There are no known casualties.

Park spokeswoman Kris Fister says the landslide was discovered Wednesday by road-crew supervisors.