People walk from Venezuela to Colombia through an unauthorized border crossing in Villa del Rosario, Colombia. Some 3.4 million Venezuelans are seeking refuge abroad, with more than 1 million of them in neighboring Colombia, according to the United Nations refugee agency, UNHCR. Many people are leaving Venezuela by foot.

People walk from Venezuela to Colombia through an unauthorized border crossing in Villa del Rosario, Colombia. Some 3.4 million Venezuelans are seeking refuge abroad, with more than 1 million of them in neighboring Colombia, according to the United Nations refugee agency, UNHCR. Many people are leaving Venezuela by foot.