South Korea
At low tide a boulder path surfaces between the island and its lighthouse.
The tide drops and the boulders emerge, a rough causeway linking Somaemuldo to the lighthouse island across open water. Slippery rock, seaweed, no handrails; when the sea returns, the path is gone.
Somaemuldo sits in the Hallyeohaesang maritime park, a tiny island where a steep path climbs from the ferry quay to open viewpoints and, at published low tides, a boulder crossing surfaces to Deungdaedo and its colonial-era lighthouse. The crossing is rough and utterly tide-bound, and the return ferry is never gambled against it. Footpaths link the scattered fishing houses; there are no roads to speak of, which is much of the island's charm.
Friends
Friends should calculate the tide window together and appoint one person to guard the return-ferry cutoff.
Couple
Two can share the steep climb and coastal reveal without risking the tidal crossing when timings tighten.
Somaemuldo has small-island restaurants rather than a dependable food district, so confirm lunch service after checking the ferry and tide.
A safer plan is to carry a meal and eat Tongyeong seafood hotpot or Chungmu gimbap back at the mainland harbour.

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Manta rays circle the world's fourth-largest barrier reef, off villages the road barely reaches.

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Lotus flowers choke the pond of a kingdom that fell fourteen centuries ago.

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