by A Total TaiTai Tale
The mountain has three volcanic crater lakes that differ in color.
Lake colors periodically change due to adjustments in the oxidation-reduction status of the fluid of each lake, and also considering the abundance of different major elements, such as iron and manganese. The colors in the lakes change independently from each other, as each has its own unique connectivity to the underlying volcano’s activity.
Tiwu Ata Bupu (Lake of Old People) is usually dark blue/black and is the westernmost of the three lakes. The other two lakes, Tiwu Ko’o Fai Nuwa Muri (Lake of Young Men and Maidens) and Tiwu Ata Polo (Bewitched or Enchanted Lake) are separated by a shared crater wall and are typically green or red respectively. The lake colors vary on a periodic basis.
from Tumblr https://ift.tt/2NzvKvP