To make laying of ashes possible in the same way as in the case of ordinary graveyard even though the area of the graveyard is small.

The structure is constructed of side walls 2 each having a number of housing chambers 6 for small graves 5 and a monument 7 provided at a position facing the housing chambers 6 at the side walls 2. Then, cinerary parts are provided at the small graves 5 and sub-cinerary parts are provided at the base of the monument 7. The sub-cinerary parts are constructed in a collective graveyard structure communicating with the underground. Ashes are partly housed in the small graves 5, and the remaining ashes are housed in the sub-cinerary parts at the base of the monument 7 and returned to the dust in the earth through parts communicating with the underground provided at the sub-cinerary parts.