By: Thumars
Image: NASA/JPL-Caltech/UArizona ⧉
License: Copyright, All Rights Reserved

Uploaded: 4 Mar 2024
Last Updated: 4 Mar 2024

15 megapixels
4,800 x 3,123 pixels
16.0 in X 10.4 in at 300dpi

According to NASA, "polygons are created from a freeze-thaw processes similar to features on Earth that undergo annual contraction of the permafrost regolith." However, is it possible that what we are really looking at are the exposed walls and ruins of an enormous frozen city on Mars? "Polygons, Crater Layers, and Defrosting Dunes The north polar region is surrounded by a large sea (erg) of dark sand dunes that become covered by seasonal carbon dioxide frost. As the northern hemisphere begins to warm in the spring, the frozen carbon dioxide sublimates. The wind blows from an east-northeasterly direction and leaves dark streaks behind (exposed basalt) from the evaporating carbon dioxide. This image displays defrosting sand dunes in an unnamed crater." Google Mars Coordinates: 79° 7'27.91"N 60°49'4.19"E