PADANG, Indonesia — Nine people were killed on May 14 in Indonesia’s West Sumatra province after heavy rain triggered the collapse of a 30-meter (100-foot) cliff at an illegal gold mine. “Three people survived, while nine others who were buried have been recovered deceased,” said Susmelawati Rosya, a spokesperson for the West Sumatra province police. Local officials said miners had ignored repeated warnings to stop work amid sustained torrential rain, and that the high international price of gold continued to draw people into the risky work. “They were reminded, but they continued with their activities,” said Zainal, the head of Guguk village, an ethnic Minangkabau village where the disaster occurred. On May 13, floodwaters swept away dozens of pontoons used by illegal gold miners near the confluence of three rivers, the Batang Sinamar, Batang Ombilin and Batang Kuantan. A day later, the heavy rain culminated in the fatal landslip at the mining site in Guguk village. Authorities say illegal mining on the rivers has become widespread in recent years. The local karst landscape is around 350 million years old and is being proposed as a global geopark to UNESCO, the United Nations’ science and cultural agency. A row of pontoons used by miners in the proposed Silokek geopark before they were washed away by heavy rain in May, 2026. Image by Novia Harlina/Mongabay Indonesia. Illegal gold mining accidents have repeatedly turned deadly in West Sumatra — and other areas of Sumatra — over the past decade, including landslides and tunnel…This article was originally published on Mongabay