An excavation in a part of Jerusalem known as the City of David has uncovered stone markings that date back thousands of years. Nobody has any idea what they are or what they mean. But whatever it is? It's important.

The v-shaped markings (not be confused with our other favorite mysterious markings) are on the floor of a recently uncovered room at the dig site. They are about two inches deep and twenty inches long. Nothing else has been discovered that suggests what they are or who made them. (Is it too early to suggest aliens?) "The markings are very strange, and very intriguing. I've never seen anything like them," said Eli Shukron, one of the dig's directors. They can tell from some ceramic fragments that the room was last used around 800 B.C., when the area was under the rule of Judean kings, but it is not known whether the markings were made then or long before.

http://gizmodo.com/5865946/experts-are-baf...