The Moraca river canyon is not the deepest in Montenegro. The deepest one is the Tara river canyon (1,300 meters). The canyons are often confused with each other. The difference is simple: the Moraca canyon is near Podgorica and is much more accessible. This is what makes it famous among tourists. In some places the canyon is really impressive in size (up to 1 km deep) and beauty. There are several suspension bridges over the canyon, try to cross them :)
Getting there: The Podgorica - Kolasin road and railway pass through the canyon. There are also group tours to the canyon from many resorts in Montenegro.