Archaeologists say three skeletons found in McGrath in October likely were of people who lived there before Caucasians ever made contact.
The Anchorage Daily News says a skull was found in early October by a worker clearing Alaska Native corporation land to make a gravel-storage site.
An archaeologist and a state trooper uncovered the bones of three males: an adult, a younger adult and a child.
Archaeologist Joan Dale says initial estimates put the bones at 100 to 1,000 years old.
Vicki Otte, chief executive officer of MTNT – the corporate landowner -says more recent analysis of charcoal buried just above one of the skeletons has been dated to between 1470 and 1650 A.D.
She says the plan now is more precisely date the remains.