North Korea has long been one of the world’s most isolated places, but Associated Press photographer David Guttenfelder has been visiting the country regularly since 2008 and helped establish an AP bureau in Pyongyang in 2012. As Guttenfelder says, “I’ve covered global stories where foreign photographers are everywhere. But in North Korea I’m usually the only one … In a world where nearly everything has already been photographed, it has become my job to reveal what it’s like inside this closed society.”

Since the introduction of 3G network service for mobile devices in North Korea this year, Guttenfelder has been uploading his images on Instagram, later including video on his feed. Click any of the still images or videos below to