We're in a burned-out area of Yellowstone National Park, miles from any road, surrounded by hundreds of acres of fire-blackened lodgepole pines, the hooves of our 17-animal pack train kicking up dust.

FORBES: Magazine Article

When a horse is galloping, its hooves hit the ground at about 15kph, and this causes damaging vibrations in the animal's legs.

ECONOMIST: Veterinary technology