摺鉢山古墳

Did a keyhole inspire the name of an ancient tomb? Here at the Suribachiyama Kofun, or Keyhole Mound Ancient Tomb, the answer is a resounding yes. This ancient burial mound, nestled within Ueno Park, earned its curious nickname from its distinctive keyhole shape. The Suribachiyama Kofun stands as a testament to Tokyo’s rich history, a silent sentinel amidst the modern cityscape. Formal records of the Suribachiyama Kofun first appeared in 1900, in a publication detailing ancient burial sites. However, local archaeologists and historians were already aware of its existence. In 1916, Ryuzo Torii, a prominent anthropologist, surveyed the area and noted that the Suribachiyama Kofun likely dated back to the same era as others in the area. A more comprehensive survey in 1984 revealed its impressive dimensions: 70 meters long, with a posterior circular portion measuring 43 meters in diameter and the largest anterior rectangular portion reaching 23 meters wide. The mound stands 5 meters above the surrounding road level. Interestingly, the Suribachiyama Kofun is also known as Ueno-dai Kofun Group No. 1 Mound, marking its central position among a cluster of ancient burial mounds. Although the front portion of the original structure is now lost, the Suribachiyama Kofun once served as a prestigious burial ground. While the precise date of construction and the identity of those buried within the tomb remain a mystery, excavated artifacts suggest it dates to the 5th century. The keyhole shape itself adds to the intrigue. It’s a design found in other kofun tombs, and researchers theorize it may have symbolic meaning, perhaps representing a connection between the living and the dead. Today, the Suribachiyama Kofun rests quietly within the park, offering a place for contemplation and a poignant reminder of Tokyo’s layered past. The Gojoten Jinja Shrine and the Seisuikansnon-do Temple, which once stood atop the mound, were relocated, further highlighting the transformations this historic site has witnessed. So, next time you find yourself in Ueno Park, take a moment to visit the Suribachiyama Kofun. Let its quiet presence transport you back in time, to an era of ancient rituals and whispered legends.