Daecheongdo

Daecheongdo lies at the far edge of the Yellow Sea, about 200 km northwest of Incheon Port. With Baengnyeongdo to the north and the North Korean coast of Hwanghae to the east, it is one of the Five West Sea Islands, and getting there takes the best part of half a day by ferry. In return you find quiet beaches and cliffs that expose rock laid down around a billion years ago, which is why the island is becoming known as a geology destination.

The island's story

Daecheongdo covers about 12.6 km² and had 972 residents in 2024. Most islanders fish, and the island was once famous for skate. In the Goryeo period it was a place of exile, and records say that Toghon Temür, a Mongol Yuan prince who later became emperor, was banished here. The North Korean coast is only about 19 km away; in 2009 the navies of the two Koreas clashed in the waters east of the island.

What to see

Daecheongdo, Baengnyeongdo and Socheongdo were certified as a national geopark in 2019, and five geosites are on Daecheongdo.

• Seopungbaji: The name means "the place that takes the west wind", and these pale quartzite cliffs rise straight out of the sea to face it. They are the island's signature view.
• Okjuk-dong coastal dunes: Sand blown from a nearby beach has piled up over a very long time into dunes, so you can walk through something like a small desert on an island.
• Nongyeo and Mia beaches: Famous for the "tree-ring rock" revealed at low tide. The rock layers stand on end and have been worn down so that they show stripes like the rings of a tree, and ripple marks are preserved in the sand.
• Geomeunnang: The fifth of the island's geosites, easy to add to a geotrail walk.
• Jiduri Beach: One of the island's favourite swimming beaches, with a gently sloping stretch of sand and calm water.

Walking routes

The Daecheong Geotrail has three sections totalling 7.1 km: a 1.2 km stretch linking Nongyeo Beach, the tree-ring rock and Mia Beach; a 3.3 km section from Maebawi Observatory over the summit of Samgaksan; and a 2.6 km loop from the Gwangnandu pavilion past Seopungbaji and Madangbawi rock. There is also a 1.7 km "sand desert" geotrail from Okjuk-dong harbour through the dunes and a red pine forest.

Good to know

• Daecheongdo is known as the northern limit of wild camellias, and the camellia grove is protected.
• A wild iris called daecheong-buchae is named after the island.

Daecheongdo as a geology trip

The island's rocks are mainly sedimentary, laid down from around a billion years ago. Rocks of the same age appear on Baengnyeongdo, showing that the two islands belong to the same geological era. Walk the beaches looking for folded or upended layers, ripple marks and tree-ring stripes, and a simple stroll becomes much more interesting. Neighbouring Socheongdo has Bunbawi and Woltti, a natural monument, and stromatolites, among the oldest traces of life, which you can add if the ferry times work out.

Tripto tips

• Getting there: Take the Baengnyeongdo ferry from the Incheon Coastal Passenger Terminal and get off at Daecheongdo. Sources give the journey as roughly 3 hours 20 minutes to 4 hours. Because the ferry serves the West Sea border islands you need ID, and fog or rough seas often cancel sailings, so leave slack in your plans.
• How long: A day trip is hardly realistic; plan at least one night. Transport on the island is limited, so ask about getting around when you book your accommodation.
• When to go: Late spring to autumn, when the sea is calmer, gives the most reliable ferries. The tree-ring rock is best seen at low tide, so check the tide tables.
• Watch out for: Photography may be restricted near military facilities; follow the signs.