The Volcanoes National Park became a battlefield during the Rwandan Civil War, with the park headquarters being attacked in 1992. The research centre was abandoned, and all tourist activities (including visiting the gorillas) were stopped. They did not resume again until 1999 when the area was deemed to be safe and under control. There have been occasional infiltrations by Rwandan rebels from the Democratic Forces for the Liberation of Rwanda in subsequent years, but these are always stopped quickly by the Rwandan army and there is thought to be no threat to tourism in the park.