January 11, 2020. EN . Colombia : Nevado del Ruiz , Hawaii : Mauna Loa , Chile : Copahue , Japan : Kuchinoerabujima , Kamchatka : Klyuchevskoy .
January 11 , 2020. Colombia , Nevado del Ruiz : Weekly activity bulletin of the Nevado del Ruiz volcano The activity level continues at the level: yellow activity level…