The thermal water is therapy: come and see for yourself
Burundi has more than ten thermal water sites spread around the nation, albeit not all of them are operational. Thermal water locations are considered therapeutic and are frequented by many people who claim to suffer from rheumatism. It is both a treatment and a nice area to swim in for visitors. Feel the warmth of this hot water that has been drawn directly from the center of the Earth.
Burundi has two significant hot springs that are thought to have medicinal properties. The eruption of geothermally heated groundwater from the earth's crust causes hot springs. The temperature of rocks within the ground rises as one goes deeper. When water percolates far enough into the crust and comes into contact with hot rocks, it gets heated. Cracks stretching down towards the extremely high temperatures of the mantle generate hot springs, and water seeping downhill is heated and driven back up under pressure to bubble.