The 28 September Mw 7.5 Donggala earthquake has generated the fault trace now able to be seen using satellite image on Google Earth especially in the Palu western zone. However, a field survey must be conducted in order to discover the decisive rupture continuity direction since it inspected not the entire trace for outside Palu areas in contrast. The survey result shows this rupture crosses Sigi, Palu, Palu Bay, and Donggala about 156 km in south-north directed. Yet, some slipping parts experienced dip-slip as oblique fault besides sinistral strike-slip/left-lateral fault type as currently inferred. Moreover, the liquefaction-affected areas were only occurred in the fault border zone such as in South Dolo, Sigi; Balaroa, Palu; and some areas of Donggala. Besides, this event reinforces evidence that Palu-Koro fault trace is the geothermal system components referred to what was happened to the villages of Pulu and Mantikole, Sigi. In sum up, this fault can be categorized as a disaster when significantly active it can cause massive damage to buildings and other infrastructures above the rupture even though the left-right side did not experience the same severe damage, and fatalities struck down by collapsed debris. © 2020 IOP Publishing Ltd. All rights reserved. Show More