This lake isn't great for swimming. Located in Northern Tanzania, Lake Natron is one of the most inhospitable places in the world. Because its located just beneath a volcano, the lake receives a steady supply of molten lava, the contents of which turns the lake its fiery red color. While most living creatures wouldn't survive one second in that water, some salt-loving extremist bacteria bask in the briny depths. The image here of the lake was taken this past March via the The Operational Land Imager (OLI) on Landsat 8.