The gruelling life of a Kurdish smuggler
8 February 2017 Last updated at 05:01 GMT
It is a trade as old as time itself - but Iranian Kurdish smugglers say their lives are getting even tougher.
Kurdish human rights group say more than 100 such smugglers were shot dead by Iranian border guards in the past year, as they try to take goods to Iran to sell.
BBC Persian's Jiyar Gol reports.