A member of the Middle East Caving and Expeditionary Team installs anchors while exploring Birdwing cave,...
A member of the Middle East Caving and Expeditionary Team installs anchors while exploring Birdwing cave, the deepest in the Gulf, on Jebel Kawr near Ibri, Oman, November 29, 2019. Picture taken November 29, 2019. REUTERS/Christopher Pike