Saitobaru Burial Mounds are on the flat western hills of Saito city
located about 25 km north of Miyazaki city.
The area is about 4 km from northwest to southeast in length, and about
2 km in width.
In this area, there are 311 burial mounds constructed from the 3rd to 7th centuries.
It is the Japan's largest scale.
Japanese burial mound is classified according to the shape from above.
This area has 279 round mounds, 1 square mounds and 31 large keyhole-shaped mounds.
Additionally, there are 10 cave tombs and 12 underground tombs.
The serious investigation into these burial mounds had been conducted
from 1912 to 1917.
And the archaeological museum was founded in 1952, and some facilities has been built in this area.
Near the archaeological museum, there are two large mounds.
One is Osahozuka 175 meters long, and the other is Mesahozuka 180 meters long.
These were constructed in the early 5th century, and are managed by Imperial Household Agency as the tombs of the Shinto gods in Japanese mythology.
And Himezuka is one of the mounds with beautiful shape, and Oni-no-iwaya has the mound with a legend that a damon constructed overnight.
In this area, about two thousand cherry trees are planted.
And the countless flowers of rapeseed in spring and cosmos in autumn cover the fields in this area.