A part of the Ganga that shot out when an arrow pierced Mumbai's soil? Or a geological formation that's 66 million years old fed by a natural aquifier? Whichever story you believe about Banganga's creation, the fact remains that it is Mumbai's holiest spot, and a place of pilgrimage for centuries. Dotting the water tank are numerous shrines, some small, some large, and hidden in and around them are several stories of the city. On our Champa Shashti special #BangangaWalk, we walk around the Banganga Tank to discover the secrets of Mumbai's oldest continuously-inhabited settlement.