The town of Altar, Sonora, is the last stop for thousands of migrants who plan to illegally cross the border that separates Mexico and the United States in search of a better life. Here, the economy revolves around migration. Along its streets we can find everything from special slippers to avoid detection by motion sensors installed in the Arizona desert, camouflage clothing to avoid being spotted by Border Patrol agents, backpacks, gloves, and even contraceptives for the women — as it is estimated that 80 percent of them will be raped during their journey.