Refers specifically to the tomb of an emperor or member of the imperial family. The more common term is 陵 (みささぎ), but 御墓 is also used.
See also: 陵 (みささぎ)
This imperial tomb is said to be that of an ancient emperor.
Compound of 御 (み, honorific prefix) and 墓 (はか, grave). The reading みはか is a combination of the honorific prefix and the native Japanese word for grave.