The UN's UNOSAT satellite imagery unit has provided these before and after photos of Yarmouk camp for Palestinians in southern Damascus. They report: "Yarmouk Camp is a district of Damascus and it is considered as an unofficial refugee camp that shelters more than 18.000 Palestinian refugees. UNOSAT has performed security analysis to monitor the situation in the camp over the Syria conflict. Imagery from 2014 compared to 2011 shows Yarmouk as besieged, with numerous roadblocks and security controls along strategic roads and controlling access to the district. Moreover, damage from bombing and shelling has reduced multiple buildings in Yarmouk to rubble."