Vents in the surface of the Earth through which magma and associated gases erupt; also, the forms of structures, usually conical, that are produced by the erupted material. source: USGS
23 March 2008
WMO Secretary-General Michel Jarraud said "it is not possible to prevent natural hazards, but the loss of lives and the damage that they cause can be minimized through risk management based on better observations"....