The search is on for Genghis Khan's final resting place. And you can actually assist the University of California professor who's heading up the quest.
But instead of a pick and shovel, you'll need a computer and the internet.
Volunteers are being asked to go to this website and look at the satellite images of Mongolia.
If you find anything unusual, flag it. That could helping the explorers who will actually visit those places.
So far, about 7,000 volunteers are taking part.