Sinkhole is washer toss game, with two boards, separated by ten feet. Each board has two different size holes and multiple ways to score. For each round, players take turns tossing 3 washers. When tossing the washers, a player must have both of their feet behind the front edge of the box. There are different scoring methods, depending on how challenging or fast you want the game to go. The first player/team to 21 points is the winner!