By a checkpoint outside the Libyan city of Misrata, a truck full of hay-bales is opened by border guards and a badly-kept secret is revealed.
Inside are women and children, and men too. Fifty people, migrants, in each truck, smuggled across the desert.
They had been inside for two days without food or water, some almost suffocated.
Abdul Rahim thought he would die. He has since been transferred to a Libyan jail.
“I paid 3,570 Libyan dinar (£1,700; $2,600) to be smuggled,” he told me. “We were treated like cargo, the smugglers took a cut at every step.”
People smugglers don’t take too kindly to enquiries about their business but, after weeks of searching, one agreed to speak to me if he could remain anonymous.
He’s grown rich out of the trade.