Karnataka is located in the western half of the Deccan plateau surrounded by Andhra Pradesh in the east, Maharashtra in the north and Tamil Nadu and Kerala to the south. Physiograpically, the state forms a part of two well defined macro regions of Indian Union; the Deccan Plateau and the Coastal plains and Islands. The State has four physiographic regions viz. Northern Karnataka Plateau, Central Karnataka Plateau, Southern Karnataka Plateau and Karnataka Coastal Region.