Mesuriyama Kofun

The tumulus lies on the left bank of the Hatsuse River and belongs to the Torimiyama Kofun Cluster, along with the Sakurai Chausuyama Kofun, which has a separate National Historic Site designation. It is a zenpō-kōen-fun (前方後円墳), shaped like a keyhole when viewed from above, orientated to the west, with a total length of 224 meters. The posterior circular portion has a diameter of 128 meters and a height of 19 meters. The anterior rectangular portion is 80 meters wide at the front and 8 meters high.

The slopes of the three-tiered mound are covered with head-sized fukiishi roofing stones, with rows of haniwa between the tiers. In the center of the circular mound is a double square section, with large haniwa in the shape of high stands and vessel platforms arranged perpendicular to the main axis of the mound and a staggered arrangement of haniwa between the two rows. These pedestal-type haniwa are 2.4 meters high and 1.3 meters in diameter, and are the largest in Japan. Inside this row of haniwa is a square platform, beneath which is the main burial chamber, a pit-style stone chamber.

The tumulus was excavated from 1959 to 1962. The main burial chamber is approximately 8.06 meters long, 1.18 meters wide and 1.76 meters high, and is covered by eight ceiling stones. A wooden coffin was placed in it, but because of grave robbery almost no remains survive.