Ground subsidence on urban area are one of the major factors of disaster. in urban area such as Jakarta, ground subsidence is frequently occurred on main road and densely populated building. Study of surface elevation changes due to influence of groundwater movement have broadly discussed. In Many areas of subsidence caused by groundwater pumping have been identified and monitored. To understand more advance in subsidence process through direct experiment. The sandbox simulation of surface structure changes due to material movement. The simulation projects the surface elevation changes due to loss of mass. © Published under licence by IOP Publishing Ltd.