Don't panic! The famous "blood falls", named for their reddish hue, are not actually made of blood. They were discovered 112 years ago on the Taylor Glacier in Antarctica by a British expedition. Since then, they have given rise to numerous hypotheses among scientists. Fortunately, a team of American researchers may finally have solved the mystery. Their research, published in May 2023 in Astronomy and Space Science, indicates that the high concentration of iron in the water is responsible for the blood-red coloration. This particular salt water also explains why it keeps flowing instead of freezing, making it the coldest known glacier with permanently flowing water. A reassuring explanation for these intriguing waterfalls and their enigmatic appearance!