Two-thirds of the region’s 150,000 people inhabit Rajin and Sonbong, many working in Rajin’s port, Sonbong’s oil processing refineries and the iron, magnesium and ceramics industries on the cities’ outskirts. As such, it’s been promoted less for tourists than for businessmen, but even then the zone’s development is taking time, and the Rajin and Sonbong zone, collectively known as Rason, encloses an area of forested hills and wetlands, lakes and the Tuman River delta with an abundance of wildlife.…At the northern end of Rason is a series of shallow lagoons, including Korea’s largest, the metre-deep, 41km-round Lagoon Sonbong.