The Athabasca Glacier is one of six major toes from the Columbia Icefield, located in the Canadian Rockies. The glacier is currently losing depth at a rate of about 5 meters (16 feet) per year and has retreated more than 1.5 kilometers (0.93 miles) and lost more than half of its volume over the past 125 years. Easily accessible, it is the most visited glacier in North America. The leading edge of the glacier is within walking distance; however, it is not recommended to go out on the glacier without proper equipment. Hidden cracks led to the death of untrained tourists.