More than 700,000 Hindu pilgrims and sadhus are expected to gather at Sangam, to take a 'holy dip' in the ocean for the Makar Sankranti festival.Photo: VCG

• Hindu devotees bathe at Gangasagar Island about 150 km south of Kolkata on January 14, 2018. Photo: VCG

• A sadhu, or a Hindu holy man, takes a dip in the waters of the river Ganges for Makar Sankranti in Kolkata, India, January 14, 2018.Photo: VCG