AMAZING UNDERGROUND SECRETS is an eye-catching, three-part series exploring the wonders that lie hidden below the planet's surface. It's a world of surprising, dramatic, awe-inspiring and sometimes magical things, from underground telescopes to crystal caves, from meandering tunnels to massive caverns to whole cities. Getting there is only part of the challenge; returning safely is a feat in itself.
Episode #101 / 56 minutes
Episode #102 / 55 minutes