In this arid river valley in southeastern Alberta, Adam Martinson is trying to find out why rattlesnakes cross the road.

Martinson, a University of Calgary student working on a Masters degree has come to Dinosaur Provincial Park, listed as a United Nations World Heritage site, to study why snakes slither onto — and too frequently die on — the asphalt blacktop of the region’s roads.

Photographer Todd Korol looks into the fate of rattlesnakes on Canadian roads.