Suncheon Bay is a tidal estuary of reed beds and mudflat on the south coast of South Korea, in Jeollanam-do, where a river winds through the reeds in an S-curve to the sea, and its farmers pulled 282 power poles from their fields to stop the wintering hooded cranes hitting the wires, in a bay that a fight against dredging in 1996 turned into the country's model wetland. The reed bed covers 5.4 square kilometres, and the walk into it begins at Mujin bridge, named for a town that does not exist, the fictional fog-drowned home of Korea's most anthologised short story, and turns into a boardwalk that loops through the reeds at eye level, the stalks clicking overhead, green in summer and deep gold through late October and November, then tawny and rattling all winter; a switchbacking trail climbs a wooded hill at the far end to the Yongsan observatory, the overlook that put the S-curve of the river on every Korean calendar, best at sunset when the water goes copper. When the tide drops, the cockle harvesters lie chest-down on wooden sleds and kick themselves out across mud too soft to walk on, digging by hand, and the bare flat is the bay's engine room, with mudskippers, fish that breathe air and skip on their fins, and crabs by the million.
The hooded cranes arrive from mid-October and stay to March, grey birds with black necks that roost on the open flats at night and commute at first light to the pesticide-free rice paddies to feed, watched from the hides as they fly in at dawn, and the bay holds a third of the world's population of them in winter. Suncheon staged an international garden expo in 2013 and then kept the garden, deliberately parked between the growing city and the bay as a buffer, and the tower that once stood in the reeds was taken down for the birds. Suncheon Bay is a marsh a town chose over its wires, and the cranes come back for it.