Yes, those are forest fires. Click to make it more glorious.


BEST_BRP_20161107_101453 by chris smith, on Flickr

Or click here, it displays it better than the forum does

https://c1.staticflickr.com/6/5606/30271884224_4ba0820c28_k.jpg

Truly, the Great Smoky Mtns.   

Fantastic