0ur Working Group (IAYCEI) on “Mitigation of Volcanic Disasters” has promoted to establish the useful method for predicting volcanic eruptions, based on instrumental observations in order to prevent or mitigate volcanic disasters. In this brief report, a list of dangerous volcanoes in the world is shown in Table 1, which is compiled by informations from the members and correspondents of the Working Group. 0n another hand, the 1969-71 event of Pozzuoli area near Monte Nuovo, Italy, is reported in a condensed form. The land deformation and seismic activity of Pozzuoli are compared with those of the 1930 Ito and the 1943-45 Usu events.
