Rundugai hot water springs / (Kikuletwa Hot Springs) or Chemka hot springs are an unexpected paradise hidden in the desert scrub outside the town of Boma. 

Situated about 35 kilometres from Moshi, in the heart of the Sanya Plains, lie the Rundugai Springs. They are an extraordinary phenomenon, rushing up from underground in the middle of parched and dusty landscape. Locally called Chemka, meaning boiling, this refers to the way in which the water appears to boil as it emerges from underground. In fact, the water is not hot rather it is a pleasant temperature! This is a good place to visit for a picnic and a swim too. And the views of Kilimanjaro on a clear day are also fabulous. Unfortunately, the water is full of fluoride which means the local people can’t use it for drinking.  The crystal-clear, turquoise waters surrounded by palm trees and winding roots offer a picturesque spot for a relaxing afternoon swim. 

The spring is actually rather big and over 6 meters deep in some places although you can see the bottom through the crystal clear waters no matter where you are. You can also wrap your arms around one of the roots and just let the water flow by as you drift off into a daydream listening to the monkeys and birds in the treas.