The most fascinating and famous attraction in Flores is Kelimutu, three colored lakes in the district of Ende and close to the town of Moni. These crater lakes are the caldera of a volcano and are fed by a volcanic gas source, resulting in highly acidic water. The colored lakes change colors on an irregular basis, from bright red to green and blue, depending on the oxidation state of the lake. The surrounding villages serve as base for visitors to Kelimutu, particularly those who wish to explore the surrounding areas. These villages are also known for their hand-woven products made using natural dyes, as well as provide a valuable insight into the interesting culture of the local people.