Jungdo is a delta formed by the sands piled up at the converging point where the Soyanggang River and the Bukhangang River meet. Today, as lake Uiam contains a large amount of water, Jungdo has become an island. It has been divided into two islands by being cut off at the center to open a waterway to Seo-myeon province.

Jungdo is gathering attention because of its richness in a variety of prehistoric relics of the Neolithic Age, the Bronze Age and the Iron Age.

Two Jeokseokchong (stone-piled tomb) are located at the lakeside near the wharf below the youth camping ground at the edge of Jungdo. One of the two tombs (one in the upper stream) was pil ed back after excavation in 1981.

They are huge tombs piled up with river stones found commonly around the area, 40m round and 5m high. Dead bodies are enshrined at the center of the tomb, and accessories buried together with dead men such as earthenware, knives, nails etc. were discovered. Grey -colored earthenware was also found inside the tombs. The grey earthenware, which has hard surface and rush-mat pattern, are called Gimhae-Style Earthenware.

The owners of these tombs seemed to have belonged to noble class who governed the whole area around Jungdo in the Iron Age.

It is supposed that those who built these stone-piled tombs constituted chiefdom in this region where soil was fertile and fish, shells and forest resources were abundant.

Take a ship at Jungdo wharf in front of Children's Hall