Genghis Khan's Mongol Empire in 1227 and at its greatest extent in 1279. (Image credit: Shutterstock) Contemporary sources are largely silent on where Genghis Khan’s tomb is or what it looked like.

For centuries, the story has circulated that more than 2,000 people died after attending Genghis Khan's funeral in an effort to keep his burial site secret.

The search for Genghis Khan’s fabled tomb poses numerous challenges. Mongolia is one of the biggest countries in the world, as well as the most sparsely populated.