A lava lake and a mini cone inside the Mount Nyiragongo volcano crater spew gas into the sky inside the Virunga National Park, near Goma, in the eastern Democratic Republic of Congo February 11, 2021. Volcano watchers worry that volcanic activity observed in the last five years mirrors that in the years preceding the 1977 and 2002 eruptions. (Photo by Hereward Holland/Reuters)
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