In the Jordanian desert, the chaos begins at sundown, when the wind whips up the desert sand and the buses arrive. For the past two years, Syrian refugees have been streaming into Jordan, and they now number an estimated half million.
But for the past month, more refugees have returned to Syria than entered Jordan, and hundreds are leaving daily from Zaatari, the U.N.'s largest refugee camp in Jordan.
"Four buses are going every day," says Kilian Kleinschmidt, who runs Zaatari. "Depending on how many people manage to storm the buses, it's probably 300 to 400 people."