P.O. Box 98199
Washington, DC 20090-8199
Inspiring people to care about the planet since 1888
Learn More »
← Back to Return to the Valley of the Khans
As they have done for thousands of years, horses carry humans across a shallow river in Mongolia. This time however, the humans are scientists carrying the latest technology to search for answers to an ancient puzzle.
© 1996-2012 National Geographic Society. All rights reserved.