In May 2021, Congo's Mount Nyiragongo, one of the world's most dangerous volcanoes, burst to life without warning. Lava erupted from cracks and (stream) down the mountain toward cities below, (leave) hundreds dead, missing or injured.
Now, using data from monitoring stations were built near the volcano in 2015, researchers have pieced together how that eruption happened so (sudden). The data also suggests the event could have been deadlier and people should (well) understand this volcano's particular dangers before the next eruption. The mountain sits near eastern border of Congo, threatening both the Congolese city of Goma the Rwandan city of Gisenyi. Nyiragongo's last two eruptions were both strong enough (feel) by people living nearby. , before the eruption on May 22, 2021, even the sensitive monitoring stations near the volcano didn't notice clear warning (sign) of lava on the move underground.
