In the beginning, the sandy ground was littered with the things that those who went before us had abandoned: sisal sleeping mats, many with the threads that bound the fibers together loosening as they flopped in the wind; suitcases; water troughs; beaded jewelry; tin cooking utensils; thin cotton dresses, skirts, shirts, and trousers; woven baskets, the kind that carried cassava crops from one home to another, and bigger, more elaborate baskets, the kind that were given to a new bride on her wedding day; rubber-soled sandals, ones for tall men and ones for smaller men, and thinner ones for women, flimsier ones for children, and all black, blacker than the people whose feet they had once adorned. But as the days went by and we continued to walk, there were fewer and fewer of these things, and instead we began to see a scattering of carcasses from animals left to die in the dry desert heat.