It is, indeed, both a pleasure and a privilege for me to welcome you on behalf of the Indonesian Governement and of the Indonesian Institute of Sciences (LIPI) at the Opening Ceremony of the Symposium on the 100th Vear Development of Mt. Krakatau and its Surroundings. LIPI is most happy to have you all with us today, since by your very presence you have also honoured us at LIPI's sixteenth anni…