In 1885 a part of the southen collapse due to the pressure of the lava in the Semeru
A additional complexity of volcanic activity is the need to place it in a human context in order to avoid volcanic disaster. Photo-interpretation of the existing aerial photographs at 1: 50,000 scale dating from 1982 has been undertaken to greatly Increase the efficiency of the volcanic hazards survey at Semeru vulcano. This photo-interpretation map has been checked in the field, and a geomorph…