The Soufriere Hills Volcano on the island of Montserrat produced a plume of volcanic ash and/or steam on 1 October 2006, part of a continuing pattern of intermittent eruptions. In this image, the island of Montserrat shows an area outlined in red – the thermal hotspot. The plume of volcanic ash blows westward over the Caribbean Sea, gradually dissipating as it moves away. No recorded eruptions of the volcano occurred before 1995, but since then, volcanic ash emissions have posed recurring health hazards for Montserrat's residents. Photo courtesy of NASA.