JYONOYAMA TUMULUS
Location
Mozunishino-cho 1, Sakai City
This keyhole-shaped burial mound has an overall length of 77 meters with the front square portion facing west. It is also believed to have been used as a castle.
The mound had been damaged sometime during the years of 1951-1954, and the structure had already been badly altered when an excavation was performed as an emergency measure. A pit-like stone room made of chipped andesite (a type of lava rock) was discovered in the rear circular portion. The long, narrow stone room measures 6.7 meters high and 1.5 meters wide.
Items excavated from within the stone room include the remains of a three-panel mirror made of clay, parts for saddles, metal parts, swords and various weapons, arrowheads and many other items. Earthenware vessels were also found within the square portion of the burial mound.