Mara-o is a tiny treeless island 11 km off the south coast of Jeju, in southernmost South Korea, having an area of 0.3 km². It is home to about 90 people, and has long been known for its population being composed of strong women and docile men. It's becoming a popular tourist destination, thanks to the many unusual rock formations, and is connected to the mainland by two regular ferries and numerous excursion boats.