A member of the Middle East Caving and Expeditionary Team sleeps at an underground camp while exploring...
A member of the Middle East Caving and Expeditionary Team sleeps at an underground camp while exploring Birdwing cave, the deepest in the Gulf, on Jebel Kawr near Ibri, Oman, November 30, 2019. Picture taken November 30, 2019. REUTERS/Christopher Pike