Ainoshima Stone Tumuli

Overview

The Ainoshima Stone Tumuli lie along Nagaihama Beach on Ainoshima, a small island off the coast of Shingū in Kasuya District, Fukuoka Prefecture. Rather than earthen mounds, these are tumuli built by piling up stones, and 254 of them stretch across roughly 100 meters of shoreline. Such a dense cluster of stone tumuli is rare in Japan, creating an unusual landscape where the sandy beach facing the Genkai Sea is itself an ancient burial ground.

Highlights

• ●254 stone tumuli lining about 100 meters of beach
• ●A distinctive burial style using piled stones instead of earth
• ●An ancient burial ground fused with Nagaihama Beach facing the Genkai Sea
• ●High academic value recognized by National Historic Site status in 2001

History

The necropolis is thought to have been in use from around the 4th to the 7th century, with countless stone tumuli built over that long span. The practice of raising graves from piled stones is uncommon nationwide and speaks to the lives of people bound to the sea. In recognition of its academic value, the site was designated a National Historic Site of Japan on August 7, 2001.

Map

33.7617, 130.3761 · Wikidata

Suggested itinerary

1. 1Cross to Ainoshima by ferry from the Shingū boat landing
2. 2Walk the tumuli spread across Nagaihama with the sea in view
3. 3Observe the stone construction up close to grasp the burial style
4. 4Explore the island and take in the sea breeze and fishing-village life

Did you know?

💡 Unlike ordinary earthen kofun, these tumuli are distinguished by being built from piled stones. A cluster of 254 stone tumuli packed along the shore is one of very few of its kind in Japan, hinting at how closely Ainoshima was tied to maritime traffic in ancient times.

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