SEOUL, July 31 (Xinhua) -- A senior South Korean official will visit the Democratic People's Republic of Korea (DPRK) Wednesday to check the ongoing preparations for the reunion of Korean families separated across the inter-Korean border, Seoul's unification ministry said Tuesday.

Vice Unification Minister Chun Hae-sung will visit the Mount Kumgang resort on the DPRK's east coast Wednesday to examine the maintenance works for the scenic resort, a venue for the reunion of the separated families.

Seoul and Pyongyang agreed to hold the reunion of the Korean families, who have been separated since the 1950-53 Korean War ended with armistice, from Aug. 20-26 at the Mount Kumgang.

About 50 workers and technicians from South Korea have been working on the maintenance since July 9 to prepare for the reunion event that would be the first of its kind since October 2015.

The reunion would be part of the efforts to implement the Panmunjom Declaration, which South Korean President Moon Jae-in and top DPRK leader Kim Jong Un signed during their first summit meeting on April 27 at the border village of Panmunjom.

Moon and Kim agreed to hold the humanitarian event around Aug. 15, a day to mark the 73rd anniversary of the Korean Peninsula's liberation from the 1910-45 Japanese colonization.

The two Koreas agreed to allow 100 separated families from each side to participate in the reunion event. The list of participants was scheduled to be finalized on Saturday.