In Undying Woods there are four graves that have been left open. Pets cannot actually die, they go to Undying Woods and are resurrected, so these graves will never actually be needed. A Bolimo plays near by these graves all of the time and often hides down inside one of these four very deep graves. You can play once a day. If you find the graves that he is hiding in, he will reward you with MP for FREE. If you pick the wrong grave stone, you will not win any prize.