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The natural world. Looking pretty for 3.5b years.

Acid Lakes

Author: Hugh Bollinger/Tuesday, September 9, 2014/Categories: natural history, space science, environment

There's nothing more relaxing after a long hike than a swim in a mountain lake. The body feels completely rejuvenated. However, some lakes are as toxic as battery acid.

According to NASA, the lake (Blue Fire Crater) inside Kawah Ijen volcano in Java: "has a pH of less than 0.3 on a scale of 0 to 14 with 7 being neutral. Lemon juice has a pH of 2 and battery acid has a pH of 1, by comparison."

A recent Landsat 8 photograph captures the turquoise blue of the acid lake that comes from chemicals dissolved in the water, including hydrochloric and sulfuric acids. Pure sulfur is mined at the crater's shore where steaming sulfuric fumaroles (vents) erupt from the active volcano.

Kawah Ijen volcano, Java  (credit: Landsat 8 )

Blue Fire Crater with Fumarole, Kawah Ijen volcano, Java  (credit: Wiki-commons)

Blue Fire Crater lake is definitely not a place for a relaxing skinny-dip or a swim of any sort.

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