Almost 4,000 people have been evacuated from the slopes of the Fuego volcano after it began erupting on 18 November, with ash and lava spewing from its crater. This comes five months after almost 200 people were buried by volcanic ash and mud during a violent eruption. That eruption generated pyroclastic flows - fast-moving mixtures of very hot gas and volcanic matter - which engulfed whole communities. Volcanologists say that this time, lava is rising 500m above the volcano's crater. The ash cloud towers one kilometre above the 3,763-metre tall volcano. Fuego is one of Latin America's most active volcanoes.