To provide a gravestone consisting of new structure having the form of an enshrining-together grave as well as a form also functioning as the memorial service of one deceased in combination as a single grave and a double grave.

A pedestal stone 2 is installed at the specified place of a graveyard, a rotary supporting disk with ball bearings being freely turned in the periphery of a vertical axial center is arranged onto the top face 21 of the pedestal stone 2, and a rotary type gravestone 6, which is formed in a regular octagonal columnar shape and the posthumous Buddhist name of the deceased can be carved at every one side face as one grave marker surface 61, is placed and erected onto the rotary supporting disk. Accordingly, the rotary type gravestone 6 is mounted rotatably onto the pedestal stone 2.