01 / Kofun Tombs
Around Kechi Bay (雞知浦), kofun tombs standfrom the late 4th to the early 7th century.

Deizuka Kofun (出居塚古墳), a square-front, square-rear tomb, dates from the late 4th century; the Neso Kofun Group (根曽古墳群, national historic site: 3 keyhole-shaped and 2 round tombs) from the 5th to 6th; Saino-yama Kofun (サイノヤマ古墳), a square tomb, from the early 7th. The prefecture infers they hold chieftains of a lineage (対馬県直) that ruled Tsushima allied with the Yamato court.
- Neso group: national historic site (1976)
- 3 keyhole-shaped and 2 round tombs
- Late 4th to early 7th century

