Tunnel to a Lost World
- Episode aired Jun 3, 2008
- TV-G
- 1h
When engineers started building the deepest submerged tunnel in the world, along the worst fault line on the planet, they knew this would be a tough project. But the greatest challenge doesn... Read allWhen engineers started building the deepest submerged tunnel in the world, along the worst fault line on the planet, they knew this would be a tough project. But the greatest challenge doesn't lie in the future, it lay in the past.When engineers started building the deepest submerged tunnel in the world, along the worst fault line on the planet, they knew this would be a tough project. But the greatest challenge doesn't lie in the future, it lay in the past.