The topographic reconnaissance survey was carried out by us in March 15, 1983. The survey has utilized the modest available equipment for surveying, e.i. magnetic geologic compass and range finder. Altimeter was also used to determine the elevation. The survey was done in the morning between 7.00 to 8.00 am.
Krakatau Volcanic Complex located in Sunda Strait, Indonesia, erupted catastrophically in 1883. The eruption was preceeded by the increasing number of seismicity during the last 7 years prior to the eruption. The initial stage of the eruption was indicated by the ash outburst of Perbu- atan volcano in May and followed by another activity in the area south of Danan Volcano in July, 1883. Ashes i…