The Pebble Mine project is a controversial proposal by Northern Dynasty Minerals to build one of the largest gold and copper mines in the world, in southwest Alaska, near Lake Iliamna. Northern Dynasty has not yet applied for permits, but their current proposal involves both a large open pit and an underground mine, as well as removal of the water from the headwaters of Upper Talarik Creek and the Koktuli River ( important fish habitats).
The site sits at the headwaters of two major Bristol Bay drainages ( Nushagak and Kvichak),
and potentially poses a large threat to the region's water and salmon.
This proposal has become a major political issue in Alaska, pitting pro-mining forces against local native villages and commercial and sport fishermen.