Between Lebanon’s high mountains and the coasts lies the Jeitta Grottos, a series of limestone caverns and the country’s greatest natural wonder. The upper cavern is the star of the show, an extraordinary sight some 2km in length, the calcite and iron oxide turning it white and red, the pools of water a crystalline green. Entering it is liking being invited into a lunatic surrealist’s test-site: Gaudi-esque walls of melted wax, honeycombed floors, stone curtains, giant fingers pointing skywards and stalactites looming overhead like some long-forgotten sea monster’s teeth. Indeed, the world’s longest stalactite is here, some 8 metres in length. An otherworldly place, one where nature has run riot, and imaginations do likewise.