Children play inside their family shelter in the rebel-held town of Douma, on the eastern outskirts of Damascus, on October 30, 2016. Abu Omar, with the help of his neighbour, was able to dig and prepare an underground shelter consisting of a single room in the space of 2 weeks. The shelter is 4 meters below ground and has an air vent for emergencies. / AFP PHOTO / Sameer Al-Doumy