Torazuka Kofun

Torazuka Kofun is a keyhole-shaped burial mound in Nakane with a total length of about 56 meters and a circular rear section roughly 32 meters across. Inside lies a stone chamber where the walls are decorated with red-pigmented patterns over white clay.

This burial mound was built in the early 7th century and contains a stone chamber where remains of an adult male were discovered. The grave goods included lacquered swords and iron artifacts, indicating high social standing.

The chamber walls display geometric patterns and weapon drawings created with red pigments on white clay, showing artistic traditions practiced during elite burials of this period. These decorations reflect the skill and cultural values that accompanied high-status individuals in death.

The site is normally closed but opens to visitors twice a year during spring and autumn seasons. It sits about a 20-minute walk from Nakane Station on the Hitachinaka Seaside Railway.

The burial chamber is maintained under special conditions with average temperatures around 15 degrees Celsius (59°F) and 90 percent humidity to protect the painted patterns. These controlled conditions are crucial for preserving the ancient decorations from deterioration.