Photos: Interior Alaska site reveals ice-age infants

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Ben Potter / UAF Members of the archaeology field team watch as University of Alaska Fairbanks professors Ben Potter and Josh Reuther excavate the burial pit at the Upward Sun River site.

Two ice-age infants discovered at an ancient campsite in Interior Alaska are the oldest human remains ever found in the North American Arctic and Subarctic, and among the oldest discovered on the entire continent, according to researchers with the University of Alaska Fairbanks.

The rare find unearthed at the Upward Sun River site -- a burial site that UAF researcher Dr. Ben Potter called an "incredibly important time capsule" -- will provide researchers an unprecedented glance into ancient social customs and a wide range of human behaviors.

Discovered in 2013, the remains of the two infants date from 11,500 years ago, near the end of the last Ice Age. The earliest known Alaskans date from 14,000 years ago.

READ MORE: Remains of ice-age infants unearthed in Interior Alaska among oldest in North America