00:00What if I told you there's a volcano on Mars, bigger than anything on Earth?
00:07It's called Olympus Mons, the largest volcano in our entire solar system.
00:14This giant stretches around 370 miles wide.
00:18Its size is so enormous, it could almost cover an entire country.
00:22And here's the mystery.
00:24How did Mars create a volcanic giant on a scale Earth has never seen?