tarpaulin

He and his relatives have made crude balconies out of wooden pallets and strung-up tarpaulin to keep out the elements.

Many of the shelters are little more than scraps of tarpaulin.

"We were laid on the floor under a piece of tarpaulin with a scorpion literally two feet away, it could kill me," he said.

The UN says it's now able to bring in 20,000 tents that have been stuck on the border since August, along with large quantities of tarpaulin and mattresses.

Men in boots and baseball caps climb on top of a vast metal structure to drape over thick white tarpaulin, erecting a rudimentary shelter to temporarily house men and women exactly like themselves.