Escalante, Utah: The last place in the United States to be mapped

In southern Utah, David Whitley finds himself in the final part of the US to be explored. It looks like a place to die. Not just for men, but for cattle, coyotes, snakes and vultures too. Staring across the landscape, ever more desolate valleys have been cut from valleys, and mesas have been topped with ever more intimidating mesas.