No. 5: Blood Falls (Antarctica)
Source：WIKIMEDIA COMMONS
Antarctica’s Taylor Glacier has what looks like a wound that bleeds bright red water through pure white ice. Scientists have been puzzled by it since it was discovered in 1911.
At first, people thought red algae caused it. Turns out, there’s a saltwater lake that’s been trapped under the glacier for 4 million years with no oxygen. When this ancient water hits air, the iron in it rusts instantly, creating that blood-red color.
Even cooler, there are microorganisms living in this extreme environment without any oxygen. This could help us understand alien life. The glacier basically acts like it’s alive, bleeding whenever it moves.
No. 4: Kawah Ijen Volcano (Indonesia)
Source：journeyera
Most volcanoes have red or orange flames, but Indonesia’s Kawah Ijen produces incredible blue fire at night. It’s like someone switched the color settings on a volcano.
Sulfur gas burning at about 1,100°F creates these electric blue flames. The crater lake is so acidic (pH below 0.5) that it’s basically a giant pool of battery acid. Local sulfur miners work in this hellscape without proper protection, which shows just how tough humans can be.
You can only see the blue flames at night during dangerous climbs, making it both beautiful and potentially deadly. It’s nature’s most extreme light show.
