1.2 million people have fled South Sudan’s conflict, the U.N. refugee agency said today.

Nearly half of those refugees have fled to Uganda, according to the U.N. 320,000 have fled to Ethiopia, and 90,000 have fled to Kenya.

The biggest settlement in Uganda is the Bibidi settlement, which went from a small border town to the third largest refugee site in the world after an influx of refugees from the Equatorian region of the country.