The Tara River Canyon (Montenegrin: Kanjon Tara), also known as the Tara River Gorge, is the longest canyon in Montenegro. It is 82 kilometers long and is 1,300 meters at its deepest, making it the deepest river canyon in Europe. The canyon is protected as a part of Tara national park and is a tentative UNESCO World Heritage Site. The Tara River cuts through the canyon.
The Tara canyon is unique with significant depths averaging around one thousand meters, and in some places up to one thousand-three hundred meters. It is ranked right behind the Grand Canyon in Arizona, USA. The Tara River, at its end making confluence with Piva, becomes the Drina, and is some hundred and fifty kilometers long. In its passage through the Tara National Park, the river has a mean fall of 3.6 meters/kilometer, making a host of waterfalls and cascades possible, thus creating with its uniqueness The Montenegrin Colorado.