| Location | Nara Pref. |
|---|---|
| Shape | Keyhole-shaped mound |
| Mound length | 210 m |
| Period | Late 4th c. |
210m mound in Yamato-Takada City, the largest in the southern Umagami group. Managed by the IHA as a mausoleum reference site.
Surveys by Yamato-Takada City Board of Education have confirmed stone paving, haniwa rows, and a surrounding moat (detailed records are limited). National historic site outside IHA jurisdiction. Many details of excavated finds remain unpublished.
In Yamato-Takada City, this mound (210m keyhole) stands close to the adjacent Konpira-yama Kofun (95m circle), illustrating the relationship between a principal mound and its satellite burial. The name "Tsukiyama" (built hill) reflects its long recognition as a place of burial.