Casey Clark and Courtney Sessum of the University of Alaska Fairbanks collect samples for testing from walrus bones unearthed at the Point Franklin archaeological dig on Wednesday, September 23, 2015, at the Barrow Arctic Research Center. They used small saws to remove three samples from each piece to run tests on DNA, stable isotopes and hormone levels. A vacuum system collected dust as they cut. Clark is pursuing a doctorate, and Sessum is an undergraduate student. Read more: Old walrus bones dug up in Alaska's Arctic could shed new light on Point Lay hauloutsWatch this video on YouTube, and be sure to subscribe to our YouTube channel for more great videos. Contact Tara Young at tara(at)alaskadispatch.com.