In West Africa, certain villages have markets that "assemble" at regular intervals, such as weekly or every three days. People from villages around the region converge on the town of Djibo in northern Burkina Faso every Wednesday to buy and sell food, livestock, and other goods and services. Here, women arrive in Djibo on foot, carrying fresh milk for sale in calabashes. Here, women bring handwoven straw mats to market for sale.