Description
As the Copper River in Alaska flows out of the inland glaciers that feed it, it flows between peaks and through valleys, all the while collecting precious sediments from the mountainsides. Cutting a 286 mile long path through the land, it empties out into the Gulf of Alaska, where it meets the ocean water. The different densities of the water prevents them from mixing on contact, forming a border between them hundreds of miles long. There’s nothing quite like it anywhere else in the world, two great bodies of water meeting each other, yet distinctly separate.
