Strange Natural phenomena, Removing Blood Waterfall Keep It Flowing

This is one of the rare natural phenomenon occurs, how is not from a source of running water in a waterfall of blood flow can have a continuous flow but rather slow. This happened in a glacier in Antarctica Murdo lembah Mc precisely in the south polar region. The first time a geologist found a frozen waterfall in 1911 and they find it strange that they think is the flow of red is the color