> The researchers have also found reindeer antlers and bones and other biological matter but have been surprised by how few of them have been revealed as the ice melts.

Sites like this can be a "kill zone" where animals tend to naturally gather like say a watering hole or a cluster of exceptionally tempting edible plants. No need to create a lure or decoys, just wait for them to come.

Lack of bones may indicate that kills were moved before they were dissected.