In a distance of 15 km from Antsirabe, it is easy to reach by the National Road 34.

[4] There's a strict Fady (taboo) for this lake and swimming is not allowed.

The lake fills an extinct crater[5] in a region notable also for the presence of many hot springs.

It sits in the vent of an oval volcanic cone enclosed in vertical gneiss cliffs.

[1] The lake's water level drops during the rainy season and rises when the monsoon rains have ceased.