Photos: Ukkuqsi archaeological site erosion

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The remains of an ancient dwelling sit exposed following storm-driven erosion at the Ukkuqsi archaeological site on Monday, September 21, 2015, in Barrow.

As sea ice retreats further from Barrow each summer, and takes longer to return in the fall, the coastline of the United States' northernmost city is increasingly vulnerable to the wind-driven waves from Arctic Ocean storms.

And sometimes, when the bluffs collapse, they yield the remains of humans long ago buried there.

Read more: Barrow's Eroding Coastline Spits out Human Bones