Lazar's Canyon or Lazar's Gorge (Serbian: Лазарев Кањон / Lazarev Kanjon) is located at about 10 kilometers from Bor. This is the deepest and longest canyon in eastern Serbia. Because of its steep rocky cliffs, the canyon has not yet been fully examined. The canyon is quite inaccessible, and passing through it is a real adventure, at times quite challenging and arduous. In many places it is necessary to clamber over the rocks. Lazar’s Canyon, up to 9 km long and between 300 and 500 meters in height, is the longest canyon in eastern Serbia.