Canyon (ca?±??n ???a pipe, gorge???) ??? a deep river valley with very abrupt, quite often steep slopes and the narrow bottom usually completely occupied with a channel of the river. One of the largest canyons of the world ??? the Grand Canyon (English Grand Canyon) the rivers Colorados in the USA (length more than 320 km, depth to 1 800). Second-large in the world and the biggest in Europe is a canyon of the river Container in Montenegro (length of 82 km, depth to 1 300). The Sulaksky canyon formed by the river Sulak between ridges Gimrinsky and Salatau (Russia, Dagestan), reaches depths about 1 900 m and lengths about 53 km. The granite gorge has length of 4 km and depth about 200 m. From apart it is possible to see before itself three peaked rocks which have risen over gorge of the river White. They are called differently: ???Three crosses???, ???Three gendarmes???, or easier "Trident". These are tops of the Dahovsky granite file. "Trident" as though protects an input in gorge from the south. In 50 metres there is a bottleneck of the river where the width of a channel does not exceed 2 m. Virgin bukovo-grabovyj wood over a raging current of water, harmonous pines on red granite rocks, a dense underbrush from an azalea and other lianas twisting trees, at last, magnificent thickets of a fern in wood ??? all it smoothes sharp ledges of unapproachable rocks and gives to gorge a festively-solemn kind.