There’s a new kind of social media star in South Korea: North Korean defectors, whose videos get tens of millions of views.

The South Korean capital city of Seoul lies only 30 miles from the North Korean border, but South Koreans, like everyone else, don’t know much about their neighbors to the north. Now, some defectors are becoming internet famous by shedding light on the most mysterious country in the world.

There is no internet in North Korea, but many young defectors learn to use social media within a few months.