Kumbh Mela festival explainer Kumbh Mela is held four times in 12 years, alternating between cities of Prayagraj, Nasik, Ujjain and Haridwar. Celebration at each site is based on astrological positions of sun, moon, and Jupiter According to Hindu mythology, gods and demons fought over pitcher of elixir of immortality. Four drops of elixir fell – one in each of four mela towns – during battle which lasted 12 divine days, equalling 12 human years Devotees believe dip in sacred waters washes away sins and helps attain “moksha” – liberation from cycle of birth and death 2019 KUMBH MELA BY THE NUMBERS 120+ million Devotees 32 sq km Pilgrimage site $650m Cost 300km Roads laid 20,000+ Beds 4,200+ Premium tents 122,000+ Toilets 20,000+ Dustbins 30,000+ Policemen 1,000+ CCTV cameras 15,000+ Sanitation workers Prayagraj (formerly Allahabad) hosts 2019 festival at confluence of Ganges, Yamuna and mythical Saraswati rivers Mela towns Haridwar Ganges Jamuna Shipra Ujjain INDIA Nashik Godavari 400km 250 miles Sources: Kumbh 2019, BBC Pictures: Getty Images © GRAPHIC NEWS