A massive railway project, The Simandou corridor, in Guinea is cutting through one of West Africa’s most important ecosystems. The Simandou corridor is fragmenting forests that are home to the largest population of endangered western chimpanzees, putting their survival at risk. But why is this massive railway project being built? Deep within Guinea’s forests lie the world’s largest untapped iron ore deposits, and they require infrastructure to enter the global supply chain. However, as tracks slice through the rainforest, wildlife is pushed into smaller, isolated areas, making survival harder than ever.This article was originally published on Mongabay