At four in the morning, in the deep darkness of the island of Flores, hundreds of visitors begin to climb the path that leads to the summit of the Kelimutu volcano. The temperature is cool, almost surprising for Indonesia, and the air smells of sulfur. There is nothing to see yet, but everyone knows what awaits them: three volcanic lakes that, with the arrival of the dawn light, reveal colors impossible to predict, changing from week to week, from season to season.
The Kelimutu National Park is located in the Detusoko region, on the island of Flores, in the Indonesian archipelago of the Lesser Sunda Islands. The volcano reaches an altitude of 1,639 meters and has been protected as a natural area since 1992. The three craters that crown its summit — locally called Tiwu Ata Mbupu, Tiwu Ko'o Fai Nuwa Muri, and Tiwu Ata Polo — contain lakes whose coloration depends on the concentration of dissolved minerals and the underlying geothermal activity. This is not an optical effect: the water really changes, and the variations have been documented by decades of scientific observations.
Three lakes, three colors, no certainty
What makes Kelimutu extraordinary is not only its visual beauty but also its unpredictability. Historically, the lakes have taken on hues ranging from bright turquoise to emerald green, from milky white to rusty brown, and even to absolute black. Photographs taken just a few months apart show completely different scenes. This happens because the underlying volcanic activity alters the chemical composition of the water, changing the pH and the presence of compounds like iron, sulfur, and silica.
In the light of dawn, the two adjacent lakes — separated by a thin ridge of volcanic rock that one can walk on — often display different colors from each other, as if they belonged to two separate worlds. The third lake, further away, is visible from a viewpoint that can be reached with a few more minutes of walking. Standing on the edge of the crater as the sun rises and the colors slowly emerge from the mist is an experience that is hard to forget.
How to get there and when to go
The logistical base for visiting Kelimutu is the town of Moni, a small village about 13 kilometers from the park, reachable by bus or shared jeep from Ende, the main town in the area, located about 50 kilometers away. From Ende, it is possible to arrive by plane from Bali or Kupang. Many visitors choose to stay in Moni the night before and depart by jeep towards the park around 4:00-4:30 in the morning, in order to reach the summit at dawn, which in this area of Indonesia generally occurs between 5:30 and 6:00.
The best season to visit Kelimutu is the dry season, which roughly runs from May to October. During the rainy season, from November to April, fog can completely cover the lakes for hours, making the dawn barely visible. Even in the dry season, however, morning clouds are frequent: arriving early increases the chances of finding a clear sky.
The trail and the on-site experience
From the main parking lot, a well-marked and well-maintained trail ascends to the summit in about 20-30 minutes on foot. The route is accessible to anyone in decent physical shape, without the need for special equipment. Along the ascent, there are some benches and resting points. The entrance ticket to the park, according to the latest available information, is around 150,000 Indonesian rupiah for foreign visitors, an amount subject to changes that should be verified on-site or on the official park website.
Once at the top, the crater rim trail allows movement between different viewpoints. It is essential to stay on the marked paths: the volcanic rocks can be unstable and the edges of the craters do not have protective barriers at all points. Bringing a flashlight is essential for the night ascent, as well as a warm layer — the temperature at the summit can drop below 15 degrees in the hours before dawn.
The local meaning of the lakes
For the Lio community, the indigenous people who inhabit this part of Flores, the three lakes of Kelimutu are not simply a geological wonder. According to local tradition, the waters welcome the souls of the deceased: the darkest lake would host those of the elders, while the other two would be destined for the young and the wicked. This cosmology is still alive in the local culture and gives the place a spiritual dimension that many visitors perceive even without knowing the details. Visiting Kelimutu means coming into contact with something that goes beyond the landscape: a volcano that changes, a tradition that persists, a sunrise that never repeats itself in the same way.
