Cha-chu or hot sulphur springs at Ralang & Borong are traditional winter spas where visitors spend a week or more soaking in these springs that have medicinal properties. Ralang Cha-chu can be reached after a 1 hr downhill walk to the Rangit valley from the Ralang monastery. Borong Cha-chu is a 7 km drive from Ralang and a further 45-minute downhill walk. Both these hot springs are located along the banks of the Rangit River.