I have heard that you are a very smart adventurer. If I am not wrong you have traveled to so many different places and you have managed to explore areas that people fear to go to. I am sure that you must have solved many puzzles during those adventures. Today I would like to challenge you. The challenge is that you go to the middle of Mysterious Mushroom Forest and come back from there. Going in the forest is not going to be difficult but you can only come out from the forest if you find all the 30 green stones.