A member of the Middle East Caving and Expeditionary Team splashes water on his face after exploration...
A member of the Middle East Caving and Expeditionary Team splashes water on his face after exploration of Birdwing cave, the deepest in the Gulf, on Jebel Kawr near Ibri, Oman, December 2, 2019. Picture taken December 2, 2019. REUTERS/Christopher Pike