In kuzhikalari the arena is protected by a thatched roof of plaited coconut leaves .The skeletal structure of the roof rests on wooden or stone pilllars, erected in the center of the eastern and western borders of the pit and connected with long beams.The height of the center of the structure ranges from 32-42 feet .The structure not only gave enough aeration but also controled the temperature within the pit .pouring gingerly oil in the ground , plating the ground by seashells and gave a healthy atmosphere for hard physical exercises.