The largest sand desert in the world 🏜️ The Empty Quarter in the Arabian Peninsular is home to what are known as 'singing dunes'. As billions of grains of sand move and vibrate against one another, a unique and eerie song is produced which echoes for miles over the landscape. 📸 BBC Studios' Natural History Unit on location for #PlanetEarth3 . . . . #SingingDunes #Desert #EmptyQuarter #AmazingLandscapes