Caravanserail II (Jordan, Wadi Rum)

In the Wadi Rum desert , a UNESCO World Heritage Site, Bedouin caravans perpetuate a thousand-year-old tradition. Once capable of absorbing up to 100 liters of water at a time, today's dromedaries are adapting: their average capacity is now reduced to 50 liters , reflecting physiological changes linked to breeding conditions , climate and tourist use . This mecca of nomadism also remains a reference for scientists studying the adaptation of species to arid environments .