The ground on which the wrestlers compete is sand. The arena is on a stage which has a height of more than 70 cm. This enables a spectators to see the competition. The diameter of the circle is 7 m. For the prevention of the players injury, there is a 2 meter zone which surrounds the sand. The sand (in bounds) is approximately 10 to 20 cm deep but is filled so that the in-bounds is level with the out of bounds zone. See Figure below.
[ Available from Korea Ssireum Research Institute. ( Website : http://ynucc.yeungnam.ac.kr/~ssi/ ) ]