North Korea is demolishing a South Korea-built property that had been used to host reunions of families separated during the 1950-53 Korean War, the South’s government said Thursday, as it continues to eliminate symbols of engagement between the war-divided rivals.

North Korea is dismantling a facility at its Mount Kumgang resort used for hosting meetings between families separated after the Korean War, South Korea said on Thursday, in the latest sign of strained tensions between the two Koreas.

South Korea condemned North Korea’s demolition of a 12-story resort where families separated by the Korean War held brief reunions, calling the action “an act against humanity.”