Tomb of Genghis Khan, Hidden tomb in Khentii Mountains, Mongolia

The tomb of Genghis Khan is an undiscovered burial site, generally believed to lie near Burkhan Khaldun in the Khentii Mountains. The surrounding area, known as Ikh Khorig or the Great Taboo, covers 240 square kilometres and was sealed off by the Mongols, with trespassing punishable by death. No structure or marker identifies the grave.

After the conqueror's death in 1227, soldiers brought the body to this remote area and killed all witnesses along the way. The secrecy was meant to prevent enemies or looters from ever finding the grave.

Burkhan Khaldun, the sacred mountain where Genghis Khan prayed to the sky god Tengri before uniting the steppe peoples, became the core of Ikh Khorig, the Great Taboo: a 240-square-kilometre zone reserved for the royal family, with trespass punished by death. An Uriankhai group called the Darkhad guarded it, exempt from taxes and military service. The area stayed restricted even in the Soviet era, and only in recent decades has it opened to Western archaeologists.

The entire region remains off-limits to visitors, as Mongolian authorities prohibit any exploration in this area. The landscape itself is difficult to cross, with dense forests and steep mountain slopes that make any search challenging.

Legends say that a river was diverted over the spot and horses were driven across the ground for days to erase every trace. Some sources claim that the soldiers themselves were killed after they completed the burial.