Fieldtrip Jogja - Surabaya on November 10, 2015 carbonate fieldtrip geology indonesia mud crack mud volcano petroleum exploration sawah sky surabaya waterfall yogyakarta +
Aman dalam bekerjasama on November 06, 2015 borehole drilling hand drilling indonesia safety first seismic seismic acqusition sumatra utara workers +
Sand, Wave and Krakatau on December 23, 2013 attraction fireworks flowers happiness indonesia krakatau sea sumatra sunset volcano +