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,
Kyle Hills Antarctica over 28 field seasons, 1969–2000, completing six seasons under New Zealand Antarctic Research Program auspices, 1969–76. He was principal investigator on numerous National Science Foundation research projects in 23 seasons of field work under United States Antarctic Program auspices, 1977–2000, with focus on long-term research of the volcano Mount Erebus, and was in charge of the Mount Erebus Volcano Observatory, 2000. Kyle Hills The Kyle Hills () are a prominent group of volcanic cones, hills, ridges, and peaks that occupy the eastern part of Ross Island, Antarctica, between Mount Terror and Cape Crozier. The hills extend east–west for ,