Originating from Vasudhara Tal, perhaps the largest glacial lake in Uttarakhand, the Dhauli Ganga flows in a meandering course, which takes it through the Nanda Devi National Park. Dhauli Ganga, which merges with Alaknanda, is one of the several tributaries of the Ganga, as the holy river flows down from the Himalayas and snakes its way through the plains. Sunday's …