The Rukban district is around 300 kilometers from Damascus, and one of the last remaining hard to reach places.
A large humanitarian aid convoy has managed to reach the remote area and distribute supplies to 40,000 people.
According to National News Agency WAM, it's been billed as the biggest aid operation in Syria to be carried out by the UN.
It took two months to put together, with a journey lasting nine days, involving more than 300 people and 130 trucks.

At least 47 dead in eastern Indonesia after magnitude 7.7 quake
Kuwait, Bahrain strongly condemn Iranian attack on ADNOC vessels
Yemen's Mocha port halts operations after Houthi attacks, port director says
Morocco arrests 111 migrants headed for Spain's Ceuta in security crackdown
