Afra Amra - Google
There are seven continuously steaming well maintained natural hot water springs in Maha Oya. One of them is recorded as the most hot spring in the island with 56 celsius, the lowest one is about 38 celsius. Many believe that the waters of these springs have healing powers.
In many places hot water springs are associated with volcanic terrains. But Sri Lanka doesnt have any active volcanoes, these hot springs are formed with either massive rocks which get heated or the chemical compounds percolate water.
These springs are well maintained compared to the other ones in the island and are less crowded. If you wish to have a bath the guards of the well will provide you with buckets to pull out water.