Escape the heat of Muscat and head to the fabled Green Mountain (also known as Al Jabal Al Akhdar, part of the Al Hajar mountain range). It’s almost 9,800 ft high, and the undulating canyons and rock formations in the area make for astonishing views, but the best way to appreciate this unique landscape is by scaling the rock face. With the guidance of friendly experts (who’ll also take those all-important Instagram shots for you), you’ll rapel down sheer drop-offs and work your way along the cliff. Courses for beginners and intermediates let you go at your own pace and, if you’re brave, you can zip line across the canyon. Back at Anantara Al Jabal Al Akhdar, visit the tranquil spa to get your heart rate back to normal.