At the Kokugikan, teams of men are busy constructing the dohyo for the Natsu basho, set to begin this coming Sunday. Prior to each tournament, the raised platform is constructed from scratch, or reconstructed from the remains of the previous dohyo.  At the Kokugikan, the dohyo is on a mobile platform that can be lowered into the floor for safe-keeping or to allow the venue to be used for events other than Sumo.

Construction will continue for the next several days, and conclude with a ceremony to consecrate the dohyo on Saturday morning.