the.com/dunes
Sand that learned to walk, one grain of wind at a time.
means Hills or ridges of sand piled and shaped by wind, common in deserts and along coasts.
from From Old Dutch dūne, kin to English down (as in rolling hills); both trace to a Celtic word for height or fortified hill.
They migrateWhole dunes creep meters yearly, swallowing roads and towns.
They singSliding sand can boom audibly up to 100 decibels.
Tallest knownCerro Blanco in Peru rises about 1,176 meters.
Star shapesMulti-directional winds carve dunes with radiating arms.