Sudanese boy from Dinka tribe who have the face covered with white ash from burned cow dung to keep off mosquitos, poses for photographer at their cattle camp in Mingkaman, Lakes State, South Sudan, on March 3, 2018. During South Sudan's dry season between December and May, pastoralists from the highlands move to the lowlands and close to the Nile, where they set up big cattle camps to make sure their animals are close to grazing land. / AFP PHOTO / Stefanie GLINSKI