Kelimutu is a volcano on the island of Flores in Indonesia. Kelimutu is Keli=Mount and Mutu=Boiling means mount is always active. It is a good base for a trip to the coloured craters of the volcano. There are three craters which are usually dark red, green and light green, but the colours are not fixed and depend on the activities of the volcano, so the colour changes from lighter or darker. The similar Kawah Putih (White Crater) near Ciwidey on the island of Java has only one lake, with light green to white colour.

- Wikivoyage