
Kelimutu is a
volcano, close to the town of Moni in central
Flores Island of
Indonesia containing three summit
crater lakes of varying colors. Tiwu Ata Mbupu (Lake of Old People) is usually blue and is the westernmost of the three lakes. The other two lakes, Tiwu Nuwa Muri Koo Fai (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 in color, respectively. The lake colors do vary on a periodic basis. Subaqueous
fumaroles are the probable cause of active
upwelling that occurs at the two eastern lakes.


The lake have been a source of minor
phreatic eruptions in historical time. The summit of the compound 1639-m-high Kelimutu volcano is elongated two km in a WNW-ESE direction; the older
cones of Kelido and Kelibara are located respectively three km to the north and two km to the south. The scenic lakes are a popular
tourist destination.