The Great Eastern Ranges corridor, one of several major corridor initiatives in Australia, extends 3,600 km from the Victorian Alps to the Atherton Tablelands in far north Queensland. The GER corridor contains Australia’s longest and most unfragmented north-south mountainous landscapes and habitats. They include vast dissected tablelands and escarpment and span major variations in rainfall, temperature, soil types, altitude and latitude. This vast area contains Australia’s richest diversity of plants and animals and contains catchments that provide a reliable, clean source of water for over 90% of the population of eastern Australia. The area is also rich in Aboriginal and non-Aboriginal heritage, and is a living cultural, social and economic resource for the millions of people who live in, or beside the ranges.