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.
Map data © OpenStreetMap contributors · Powered by Geoapify
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.

Abaiang
Kiribati
At high tide the sea surrounds Tebunginako's church; the village choir times services around it.

Abbotsbury
England
A swannery where six hundred mute swans nest in reed beds behind the Chesil Bank.

Abel Tasman National Park
New Zealand
Golden bays between forested headlands, reached only on foot, by kayak or water taxi.

Aberdaron
Wales
A church on the sand where pilgrims ate their last meal before the island crossing.

Andong Hahoe Village
South Korea
One clan has lived inside this river bend for six hundred years.

Baengnyeongdo
South Korea
White quartzite cliffs stand twelve kilometres from North Korea's coast.

Banwol Island
South Korea
In 2015 an entire farming island painted itself purple, roofs to bridges.

Boseong
South Korea
Five hundred hectares of tea rows climb into the morning fog in parallel lines.