Blood Falls
Blood Falls is located in Taylor Valley, Victoria Land, Antarctica. The water is rich in iron oxide, which turns it a deep red color, hence the name "Blood Falls."
Taylor Valley is part of the McMurdo Dry Valleys, with the Taylor Glacier at the western end of the valley. The water of Blood Falls comes from a subglacial hypersaline lake about 400 meters beneath the glacier, containing compounds rich in sulfur and iron. This iron-rich water flows out through cracks in the glacier, and when the iron meets oxygen in the air, it rapidly oxidizes, creating this spectacular phenomenon.
Blood Falls was first discovered in 1911 by Australian geologist Thomas Griffith Taylor, who initially believed the red color was caused by red algae in the water. It was later found to be due to iron oxide.