Acid lakes at the Dallol Volcano in Danakil Desert, Ethiopia | Photo by Pascal Boegli | http://en.wikipedia.org/wiki/Dallol_(volcano)

Acid lakes at the Dallol Volcano in Danakil Desert, Ethiopia | Photo by Pascal Boegli | http://en.wikipedia.org/wiki/Dallol_(volcano)

Acid lakes at the Dallol Volcano in Danakil Desert, Ethiopia | Unique in that lava does not flow from it.

Acid lakes at the Dallol Volcano in Danakil Desert, Ethiopia | Unique in that lava does not flow from it.

"Rock Candy" - Grand Staircase-Escalante National Monument, South Coyote Butte area, Utah (USA) – Crédit Photo : Stephen Oachs via Flickr

"Rock Candy" - Grand Staircase-Escalante National Monument, South Coyote Butte area, Utah (USA) – Crédit Photo : Stephen Oachs via Flickr

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