Haridwar is an important pilgrimage city the Haridwar district of Uttarakhand, India. The River Ganga, after flowing for 253 kilometres (157 mi) from its source at Gaumukh at the edge of the Gangotri Glacier, enters the Indo-Gangetic Plains of North India for the first time at Haridwar. which gave the city its ancient name, Gangadwára.Haridwar is regarded as one of the seven holiest places to Hindus. According to the Samudra manthan.