Image: Penitentes Upper Rio Blanco Argentine

Description: Field of Penitentes on the Upper Rio Blanco, Central Andes of Argentina. The blades are between 1.5 and 2m in height, slightly tilted northwards, or more exactly about 11°, the approximate position of the sun at noon at this latitude and time of the year.
Title: Penitentes Upper Rio Blanco Argentine
Credit: enWiki en:Image:Penitentesfield.jpg
Author: Arvaki
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