National Geographic : 1950 Apr
© National Geographic Society 4 Desert's Road to Life-giving Water Is Paved with Bruising Cobbles Though sheep withstand days of thirst, other mem bers of the trek must drink more often. Tonto Creek fills their kegs. Beyond lie the distant Sierra Ancha and nine lonely days with no sign of habitation. Kodiachlro es by Franci s I. Line + Rosalio Stops Beside a Barrel Cactus, Plucks Thorns from His Dog's Paw Each night he burns off the cholla cactus lest the spines adhere to the herd and drive deep into the flesh. When grass is gone, sheep nibble cactus blooms, sometimes wounding themselves severely.