Zigzag Etched On Ancient Shell May Be World's Oldest Art

Art may be a lot older than we ever imagined.

In 2009, scientists working in South Africa were stunned to discover rocks that bore engravings made by humans around 100,000 years ago.

But those etchings seem practically modern compared to the zigzag design carved on the surface of a mollusk shell that researchers recently stumbled upon while rummaging through a set of fossils collected in Indonesia in the late 1800s. 

The geometrical engraving is believed to date back 430,000 to 540,000 years, making it the oldest such artifact ever found.