nails, or roll there on the ground, often for a distance of several kilometers. these are some of the way believers express gratitude to kali, or implore her for help. ritualistic body piercing is another such expression. [ drums ] [ chanting ] >> janah: i'd say it's a very interesting thing, they prepare for a very long time. 28 days they fast, and they condition themselves mentally. and when they come to the temple, and there is a special ceremony which takes place, and that they kind of chant and play