At the centre of the celebration stands the Charak Tree—usually a tall Gurjan tree (Dipterocarpus turbinatus)—stripped of roots and branches. It represents Ardhanarishwar and symbolises divine unions, such as those between Shiva and Nilavati or Dharmaraj and his consort. As part of an important ritual, a mask of Ardhanarishwar is first placed on the Charak tree and worshipped. Only after this worship is completed, the tree is erected, and a large wheel-like structure made of bamboo is fixed on top for the subsequent rituals. From this wheel, the sanyasis are suspended and spun—hooks pierced through the skin of their backs, ropes fastening them to the wheel. The piercing is seen as a rite of transformation, allowing the devotee to experience the pain of childbirth and transcend their bodily identity, virtually turning them into women. In some towns like Batanal in Hooghly district, sanyasis are even nailed to wooden crosses. Mothers often bring their infants to the hanging men for blessings, believing the act bestows protection and good health.