Maha Kumbh: The Triveni Sangam in Prayagraj is a confluence of 3 rivers, the Ganga, Yamuna, and Saraswati. Of these three, the river Saraswati is invisible and is said to flow underground and join the other two rivers from below. Here the muddy and pale-yellow waters of the Ganga merge with the blue waters of Yamuna. Check prices for Sangam Ganga water across Zepto, Bigbasket, Amazon.