Megalithic monuments are among the earliest and most permanent of archaeological structures, and so many of them were used, or more properly, have been used and reused for thousands of years. Their original intent is likely lost to the ages, but they may have had multiple functions as they were used by different cultural groups over the centuries and millennia.
Tribal wall painting is an age-old tradition. The personal experiences of the artists and their interactions with the nature are the biggest influence in these art forms. Khovar art was traditionally for decorating the marriage chamber of the bride and groom, and it usually depicts the animals and plants of neighbouring forests and valleys.
Sohrai is a winter harvest festival and one of the most important festivals of santhals in Jharkhand and West Bengal. It is mainly celebrated at the beginning of winter harvest, when the paddy has ripened, on the new moon day of the Bengali month of Kartik, coinciding with Diwali or Kali puja, in the month of October-November.