Grindstone Canyon, Northern CA [OC][4000×1514]
Picture found by the Ditpub “Beautiful World” searcher.
Original was/is available from http://i.imgur.com/6acrFcQ.jpg
Back to school with the following…
A grindstone is a round sharpening stone used for grinding or sharpening ferrous tools. They are usually made from sandstone.
A gorge or canyon (cañon, old spelling occasionally still used) is a deep ravine between pairs of escarpments or cliffs and is the most often carved landscape by the erosive activity of a river over geologic timescales.
Published by DitPub on 2015-10-15 5:06:57, under the category “Beautiful World”
DitPub is a for-learning-&-fun-bot by Artur Marques