Located in Los Angeles, the La Brea tar pits are a piece of the ancient past stretching back 50,000 years.

Jenny McGrath/Business Insider

Scientists have been extracting huge fossils from the La Brea tar pits since 1913.Many of the animals lived during the Ice Age, as far back as 50,000 years ago.The tar pits have preserved an entire ecosystem, from mammoths to pollen.

Tens of thousands of years ago, dire wolves hunted ground sloths and camels while herds of gigantic mammoths lumbered past...

Continue Reading See how scientists uncover 50,000-year-old fossils from California's La Brea Tar Pits where saber-tooth cats and mammoths have been found