The Fern Lake Fire, which has gone through varying stages of smoldering and flaring up since it was first spotted back in October, has cost the National Park Service more than $3 million to combat and the bill continues to rise, National Parks Traveler reported.

The fire, which has destroyed one cabin inside the park and led to the evacuation of hundreds living in outlying areas of Estes Park, Colorado, is roughly 3,500 acres (latest revision) in size, with 40 percent of the fire contained.

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