Aerial shot oxidised old mining iron minerals in water Rio Tinto
Textures of Rio Tinto in Huelva (Spain). Located in a region that legend claims was part of King Solomon's mines, the Rio Tinto looks like deep, red wine, because iron is dissolved in the highly acidic river water. Mining activity at the Tinto River dates back at least 5,000 years.
According to NASA scientists, the Rio Tinto area is an important analog to searching for life in liquid water, deep beneath the subsurface of Mars.
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