Neville Wakefield leads listeners into the canyon surrounded by petroglyphs that mark the site for Desert X AlUla. He and Raneem Farsi stop off at On Parade by Nadim Karam, and learn that his parade of 30 sculptures is about “the power of nature.” Mohammed Ahmed Ibrahim mixes rocks from his hometown of Khor Fakkan, UAE, with those of AlUla to make his colorful Falling Stones Garden. Gisela Colon says her iridescent, 25 feet-high, carbon fiber totem is at once masculine and feminine, futuristic and primal. “I'm trying to make something that is softer and different from the traditional masculine land art,” she says.