Barajas, the springboard of the new migratory route from Africa to the United States. The Madrid airport becomes a regular stopover for thousands of Senegalese and Mauritanians who change the cayuco for a plane.

Once in Central America, the objective is to enter the U.S. irregularly. The arrival of Africans to the wall that protects the country with the highest GDP in the world skyrocketed last year. The route costs between 7,500 and 9,200 euros, according to calculations by the Associated Press.