The Tara River gets its vivid blue-green colour from the limestone it flows over. Limestone dissolves slightly in water, releasing minerals that scatter light and make the river shimmer like a jewel. The water is also extremely clean and cold, flowing down from the snowy peaks of Durmitor before it enters the canyon.
Looking down into Tara Canyon feels like looking into a different world. The forest at the top is pine and spruce. As you descend, the trees change — near the river it is warmer and wetter, so different plants grow there. Scientists call this 'vertical zonation', like having several different countries stacked on top of each other in one place.
The canyon is part of Durmitor National Park, and white-water rafting on the Tara River is one of Montenegro's most popular adventures. Rafters float through the gorge surrounded by towering walls of rock and ancient forest, spotting eagles overhead and trout darting below. A historic bridge called the Đurđevića Tara Bridge arches over the canyon — when it was built in 1940 it was one of the highest road bridges in Europe.