In December 2008, two abandoned pack horses, a young mare named Belle and an older gelding called Sundance, are spotted by snowmobilers in the remote mountains of the Canadian Rockies. Starving and exhausted, they've trampled the snow into a deep white closet, with walls towering over them.
This is the story of their 8 day near impossible rescue, involving a trench dug by dozens of volunteers six feet deep and a kilometre long, and then a 30 kilometre descent for the frostbitten humans and the weak and emaciated horses in minus 40 degrees temperatures.
