It is thought to be either a landslide or liquefaction.[27] In Labuah Kaciak, small hot springs appeared from the ground, erupting brown water.[28] A landslide was triggered in Jorong Sungai Siriah, measuring 6 meters in height and 30 meters wide.[1] The BNPB said that the rapid soil movement was a type of flash flood caused by a breached landslide dam.