The Wider Image: Kazakhstan's singing sands
A tourist stands at the edge of the singing sand, the 490 foot-high by 1.86-mile-long (150-metre-high by three-kilometre-long) dune that generates a low-pitched, organ-like rumble in dry weather, in Altyn-Emel national park in Almaty region, Kazakhstan, May 12, 2016. REUTERS/Shamil Zhumatov