In Delhi's Bengali hub of Chittaranjan Park, the pandals are buzzing with people and the sounds of dhaak. One of the pandals uses eco-friendly clay and paints that are bio-degradable. The residents say they will not head to a river for immersion of the Durga idol. A pond is dug out in the park where the idols will be immersed and later used as a compost site. The frame of the idols and stage is returned to the artists to be reused.