Survival Strategy of Two Migratory Tribes

The author aims at explaining the distribution of both the Tribal Communities in a specific ecological niche which is dependent on how a particular community is able to exploit it. The exploitation is carried on between the production of energy & goods, cultural values, social organization, technology and population - function in relatively isolated, low-energy societies inhabiting a deep crater (Bharias of Patalkot) and a plateau (Koras of Birbhum).