[Photo Group] Top Ten Ancient Mysterious Lost Civilizations in the World

According to foreign media reports, understanding the human past has cost many historians and archaeologists years of efforts. Reviewing the history, we will witness the rise and fall and changes in the long river of human history. The footprints of human development repeat the path of construction and destruction. But so far, there are still many ancient civilizations that can not be explained by people in the world, and it is difficult to unveil their mysterious veil.

The following is a list of the top ten ancient mysteries around the world by American media.