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Moonlit Butte

Moonlit Butte

Obsidian Butte at the southern shore of the Salton Sea illuminated by a setting 16% moon (out of frame).

I had hoped to shoot the Milky Way here, but the light pollution was far worse than I had anticipated.

Obsidian is produced when magma cools very suddenly so that there is no time for mineral crystals to form. The resulting rock has a structure similar to glass. In ancient and modern times obsidian has been honed into ultra-sharp arrowheads, knives, and cutting tools.

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Photo prise le 18 mai 2018 (© slworking2 / Flickr)

Voir aussi :
 calipatria, california, united states, us, butte, obsidian, obsidian butte, desert, salton sea, night, sky, stars

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