Mexico uncovers 12,000-year-old underwater mine

Researchers diving into dark submerged caves on Mexico's Yucatan Peninsula have found evidence of an ambitious mining operation dating back 12,000 years, for red ochre, an earth mineral pigment prized by prehistoric peoples.

Save videos for later by signing up or logging in

With "My Queue" you can quickly save videos to watch later.

To add an item to your queue just click the sign next to the video.

Once you've added a video visit "My Queue" to start watching!