Guide
Ojin Tenno-ryo Kofun (Yoneda Bomyozan Kofun) is a massive keyhole-shaped burial mound (zenpo-koen-fun) located in Yoneda, Habikino City, Osaka. Estimated to have been constructed in the first quarter of the 5th century, it is a prominent part of the Furuichi Kofun Group. The mound measures approximately 425m in length, with a rear circular part reaching a height of about 36m and a total volume of roughly 1.43 million cubic meters. This site is a testament to the advanced engineering and social structures of ancient Japan. The area is surrounded by lush greenery, offering a serene and tranquil atmosphere.
According to long-standing tradition, this mound is believed to be the imperial tomb of Emperor Ojin. Archaeological studies, including the analysis of cylindrical Haniwa (terracotta figures) and Sueki pottery, suggest the structure dates back to the early 5th century. While academic debates continue regarding the specific identity of the person buried here, the site has long served as a significant center in Japanese ancient history. Furthermore, the nearby Yoneda Hachiman-gu, one of Japan's oldest Hachiman shrines, developed in close connection to the presence of this imperial tomb, deeply intertwining the region's historical and religious identity.
The mound's distinctive keyhole shape is a classic example of ancient Japanese funerary architecture. The vast scale and the way the structure integrates with the natural terrain demonstrate the sophisticated construction techniques of the era. Visitors can observe the historical landscape that provides insight into ancient Japanese society. Additionally, the adjacent Yoneda Hachiman-gu Shrine holds deep historical significance, with connections to historical documents like the 'Yoneda So-byo Engi Emaki' (illustrated scrolls from the Muromachi period), making the area a comprehensive historical experience.
While the site is accessible year-round, visiting during daylight hours is highly recommended. The surrounding vegetation changes beautifully with the seasons; the deep greenery of the warmer months particularly highlights the majestic silhouette of the mound. On clear, sunny days, the distinct keyhole shape is most easily visible and recognizable from the surrounding landscape.
Visitors can explore the origins of Japan's ancient burial culture and observe how the natural landscape has been shaped by history. Walking around the perimeter of the mound allows for a peaceful connection with both nature and the past. To gain a deeper understanding of how these ancient tombs influenced later Japanese religious traditions, we recommend visiting the nearby Yoneda Hachiman-gu Shrine in conjunction with the kofun.
Located just south of the mound is Yoneda Hachiman-gu, a vital center of local faith that grew alongside the history of the imperial tomb. The surrounding area is also home to other significant ancient sites, including the Daisen-ryo Kofun (Emperor Nintoku's Tomb), both of which are part of the UNESCO World Heritage-listed Mozu-Furuichi Kofun Group.
There is no admission fee to visit the area. However, if you plan to use nearby facilities or local transport, we recommend carrying cash or a credit card.
English language signage and staff support may be limited in this area.
No advanced reservations are required to visit.
As you will be walking around an outdoor historical site, please wear comfortable walking shoes and dress appropriately for the weather. We also recommend bringing a hat for sun protection and plenty of water.
As this is a sacred historical site, please be respectful of the environment and follow local etiquette when taking photographs.
Due to the natural terrain of the mound and the surrounding environment, there may be uneven surfaces and slopes. Please prepare for walking on uneven ground.