Soufrière Hills century in Montserrat. When pyroclastic flows and mudflows began occurring regularly, the capital, Plymouth, was evacuated, and a few weeks later a pyroclastic flow covered the city in several metres of debris. The first phreatic explosion in this new period of activity occurred on 21 August 1995, and such activity lasted for 18 weeks until it caused an andesitic lava dome formation. This was initially confined by a sector-collapse scar. This period lasted for another 60 weeks, after which there were major dome collapses and two periods of explosive volcanic eruptions and fountain-collapse pyroclastic flows. The explosion blanketed Plymouth, away,
Devastation Trail and the intensity of the earthquakes also increased. By nightfall, the earthquakes stopped, and the eruption began. The fissure eruption produced fountains of lava which cascaded to the floor of the crater some 100 m below the erupting fissure. Forest fires were also noted. Over the next few days, the lava fountains became higher and higher, eventually reaching a height of more than 500 meters. Erupting pumice started building a new cinder cone that was later named " Puu Puai", (gushing hill). A lava lake also developed on the crater floor. The eruption produced both Pele's hair, the geological term