ANTARCTICA'S BLOOD FALLS
This bleeding glacier was discovered in 1911 by a member of Robert Scott’s ill-fated expedition team. It was first theorized that the fall's strange blood color was caused by algae but later it was credited to good old iron oxidation - natural rust - from the iron-rich liquid that the glacier occasionally spews.
The source of the falls is a sub-glacial lake 1,300 feet under the ice. A new study has shown that microbes in the lake, cut off from light and oxygen, have adapted to live off of iron compounds and sulfur. Scientists also think that it's very likely that, if there is life in the solar system, it will resemble these lifeforms.