Tamna's founding myth tells of three ancestors—Go Eulna, Yang Eulna and Bu Eulna—emerging from the earth. A chest arriving from the sea is said to have brought their future partners along with seeds and livestock for a new life. Places such as Samseonghyeol and Honinji keep the myth visible in Jeju's landscape. This is a narrative of origins, not a substitute for archaeological evidence about early Tamna.