The world's largest rangoli is being prepared in Uttar Pradesh's Prayagraj ahead of Maha Kumbh, ANI reported. Around 11 tons of colour will be used in the rangoli spread across 55,000 square feet, it added. The Maha Kumbh Mela 2025 will begin on January 13 with the final Shahi Snan to be held on February 26 on Mahashivratri.