Restless residents displaced by Colorado's most destructive wildfire ever are returning to previously closed neighborhoods as firefighters continue to tame the blaze.

Wildfire burns in Black Forest, Colorado
Wildfire burns in Black Forest, Colorado (Tom Cooper/Getty Images)
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Authorities say no additional homes were destroyed as fire crews expanded containment lines Saturday to 55 percent. The wildfire has destroyed nearly 500 homes and killed two people.

The fire erupted Tuesday outside of Colorado Springs, driven by hot temperatures and strong winds.

It's unknown what sparked the blaze, but investigators believe it was human-caused. So far, it's cost more than $3.5 million to fight.

(Copyright 2013 The Associated Press. All Rights Reserved)

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