The victims of the Mount Ontake eruption were mourned Monday as authorities and residents marked a month since the volcano killed 57 people and left six others missing.

Municipalities in the area meanwhile launched campaigns to woo visitors back to help the tourism industry, which is suffering from the repercussions of the sudden eruption.

Officials from Nagano Prefecture, the town of Kiso and the village of Otaki at the mountain's base observed a moment of silence at 11:52 a.m., the time of the Sept. 27 eruption.