Great Smoky Mountains Fraser Fir trees in danger

I took this photo during a foggy sunset on Clingman's Dome on the North Carolina-Tennessee border in Great Smoky Mountains National Park last week.

The trees pictured aren't victims of a recent forest fire, the trees were killed by a European invader species, a flightless insect known as the balsam woolly adelgid.

Clingman's Dome, at 6,643 feet above sea level, is the highest peak inside the park.

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