JEJU CITY — “Please turn off all the flashlights,” Ki Jin-seok, a curator of Jeju World Natural Heritage Centre, said during a press tour of a restricted section of Manjanggul. Unlike the section of the cave that is open to the public, this area does not have a single light installed. The cave soon became pitch dark. … [Read more...] about Jeju’s UNESCO heritage cave to open up for 17 days
