Kate Humble makes an epic two thousand mile journey across the Middle East, following the ancient frankincense trade route of Arabia which first connected the Arab world with the West.

Archaeologist Abdulrahman Alsuhaibani notes that AlUla “held a strategic position on the major north-south caravan routes through ... carrying aromatics such as frankincense and myrrh, and ...

"The gold, frankincense and myrrh brought by ... Both territories claim the area. "The routes of the camel caravans that for centuries transported them from here to the Middle East can be seen ...