ANTARCTICA, a land of icy extremes, is often likened to “space on Earth”, with how much of the continent remains unexplored and misunderstood.
Antarctica's harsh climate and remote location make it difficult for researchers to access many areas of the continent and birthed many strange phenomena, including icy deserts and warped gravity.
One of the more striking phenomena is Antarctica's Blood Falls – a waterfall whose main claim to fame is its cascade of crimson waters.
Does such an unsettling-sounding waterfall actually exist?
Verdict:
True
In Antarctica's McMurdo Dry Valley – one of the world's most extreme deserts – there is what appears to be a huge gash in one of the glacial walls. And out of this gash, bright-red water pours out, like a wound, gushing blood.
This eerie spectacle was first discovered in 1911 by geologist Thomas Griffith Taylor and has since been aptly named the Blood Falls.
Despite their gory name and appearance, the truth behind the Blood Falls is not gruesome. In fact, it might even be rather boring, depending on who you ask.
The striking colour of the waterfall is not due to blood, but rather is the result of a unique set of geological and microbial processes.
The water that feeds Blood Falls originates from a subglacial lake trapped beneath the Antarctic ice for millions of years.
This ancient body of water is rich in iron but devoid of oxygen. As the iron-rich water seeps through fissures in the glacier and comes into contact with the air, it oxidises (or rusts), giving the water its red hue.
The rusty water also stains the pure white glacier as it leaks out, creating the impression of a bloody murder scene. However, for scientists, it is not the striking Blood Falls that are of interest, but the lake trapped beneath the ice.
For one, researchers were puzzled as to how the water remained unfrozen despite being encased in about 400 metres of ice, until they discovered that it was three times saltier than seawater – essentially becoming too salty to freeze.
Then, they discovered that while the waters themselves did not freeze, time itself seemed to have frozen in this subglacial lake. Microbes that came into being millions of years ago continued to thrive in these icy waters.
Cut off from the rest of the continent, these microbes have adapted to live in the pitch-black, salt-dense, iron-rich and oxygen-free water that is buried under a thick layer of ice.
Ask any scientist, and they will tell you that the discovery of microbial life within this extreme environment has profound implications for our understanding of extreme ecosystems. They may even offer insights into the potential for life in similarly harsh environments elsewhere in our solar system, such as Mars!
That being said, the writer chooses to believe the cooler alternative truth: that the waterfall really is blood leaking out of the heart of the Antarctic ice.
Refrences:
https://www.smithsonianmag.
https://www.
https://hub.jhu.edu/2023/06/
