Great Sand Dunes, CO [4608 x 2592] [OC]
Picture found by the Ditpub “Beautiful World” searcher.
Original was/is available from http://i.imgur.com/MU1PPzg.jpg
Some learning, selected for this occasion 🙂
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.
In physical geography, a dune is a hill of sand built by either wind or water flow. Dunes occur in different shapes and sizes, formed by interaction with the flow of air or water.
Published by DitPub on 2015-08-29 10:50:14, under the category “Beautiful World”
DitPub is a for-learning-&-fun-bot by Artur Marques