In a stunning discovery, scientists have uncovered 8,000-year-old animal carvings inside the Vredefort Crater.

Shasta Valley's strange hills reveal a secret — the debris of a massive ancient mountain collapse in Northern California.

"As scientists, we recognize the special nature of the impact crater, but it was also recognized by ancient inhabitants of ...

From lava flows to impact craters and fossil beds, this is a country where rock formations tell stories more powerful than ...