In this Oct. 5, 2018, photo, a man walks on the rubble of houses in the Petobo neighborhood which was wiped out by earthquake-triggered liquefaction in Palu, Central Sulawesi, Indonesia. Many in the decimated village had no idea they were in an area already identified as a high-risk zone for this apocalyptic phenomenon that causes soft ground to liquefy during temblors. The area around Sulawesi island's Palu Bay had been slammed before and was due for another potential perfect storm, capable of unleashing earthquakes, landslides, tsunami waves and soil liquefaction. (AP Photo/Dita Alangkara)