Sahara Desert
2017
Dune of Pilat, France
Dune of Pilat, France
The dune du Pilat is about 110 meters above sea level. This dune is the european tallest one., la dune du Pilat est la plus haute dune d’Europe. The dune has a volume of about 55,000,000 m³.
The marbled white (Melanargia galathea)Ethiopia: The Erta Ale volcano and its lava lake
Erta Ale is an Ethiopian volcano located in the Afar region, in the northeast of the country, within the East African Rift Valley. Standing 613 meters high with a base diameter of 30 kilometers, its broad, low-profile shape classifies it as a “shield volcano.”
At the summit of this highly active volcano lies a caldera containing two pit craters. The South Pit, 200 meters in diameter, is currently the most impressive as it houses a permanent lava lake where molten rock reaches temperatures of 1,200 degrees Celsius. The lake’s level fluctuates constantly; in January 2017, it rose high enough to overflow. By April 2017, the level had dropped, offering observers a spectacular and cyclical phenomenon of emptying and refilling, which can be seen in the videos at the end of this article.
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