China
One of the greatest archeological discoveries in the world was made less than 50 years ago.
In 1974 some peasants digging a well discovered a life-sized clay soldier. They had stumbled across the long lost mausoleum of Emperor Qin (he declared himself "first emperor" after defeating the various kingdoms and unifying the country).
Since then thousands of soldiers, horses, chariots, and weapons have been unearthed.