Semeru (or Semeroe, Smeroe, Smiru) volcano is situated in Malang dan Lumajang region, East Java. The summit of Mt. Semeru is Mahameru (+ 3676 m asl) which is located at 08°06’30” south latitude and 112°55′ east longitude and is the highest peak in Java. In the southern part of the summit grows the young active crater which has been erupting since the nineteenth century, namely Jonggring Seloko crater. Small vulcanian explosions have occurred at intervals of between 10 minutes to…