This complex site was a major settlement, megalithic cemetery, and ceremonial area during the latter part of the Middle Mumun pottery period (c. 700-550 B.C.).

Several islands that lie just off the coast of Samcheonpo, including Neuk-do Island and Ma-do Islet, were also important during the same period and into the Korean Protohistoric period when this part of Korea increased its trade contacts with the chiefdoms in the Liaoning Province region of China, Taedong-gang River area of North Korea, and Yayoi chiefdoms of Western Japan (c. 300 B.C.- A.D. 300/400).

[3] Much of the area between Sacheon-eub and Samcheonpo is a narrow coastal plain, and devoted to fruit producing orchards as well as wet and dry agriculture.

The harbour of Samcheonpo is the gateway to a number of small islands lying offshore, where people still practice a traditional fishing subsistence lifestyle that dates back to the Jeulmun Period (c. 4000 BC).

Sacheon is twinned with: In Korean, the idiom "잘 나가다가 삼천포로 빠진다", literally "Was going well but suddenly slips into Samcheonpo," means that a speaker has gone off-topic.