Five years after North Korea built a modern airport with the ambition of serving new waves of international tourists, the government has once again expanded it with 530,000 square feet of pavement and other add-ons, according to NK Pro analysis of recent satellite imagery.

Kalma Airport, located in the east coast city of Wonsan, has yet to achieve its goal of becoming a hub for foreign tourists. So far, it has not established any links with airports abroad — in fact, its runways have instead been primarily used by the North Korean military in recent years.

Meanwhile