The two Koreas will work together on a six-month project excavating Manwoldae Palace on the North Korean side of the border, South Korea’s Ministry of Unification said Sunday.

The site, located in the North Korean border village, is the central palace from the Koryo Dynasty (919-1392) that precedes Joseon. As part of the plan, more than 10 members of a historians’ association were to travel to the site Monday, to be followed by about six-dozen more over the next six months.

The Manwoldae excavation project has been taking place off and on since 2007. The project is one believed to