We know Mount Everest as the highest mountain of the world. But very few people know that this 8,848 metre-high tallest mountain is perhaps the world's highest grave as well.

Trekking Everest is an extremely challenging task which needs hardcore dedication and skill to be ready for anything coming your way. This is why many climbers over the years have died atop the mountain and their frozen bodies, impossible to be carried down, are still there.

What is interesting is that many corpses, almost 200 in number, uphill, serve as landmarks for trekkers to know they are on right track.

Still can't believe it? Watch it here:

Source: Did You Know?

At Everest, lie many a climber at rest.