A new documentary about the ancient Lavrio mines, which were so rich in minerals that their exploitation made possible the rise of Athens as a naval power, shows the labyrinth of underwater tunnels in their now-flooded shafts. Greek scuba divers Errico Kranidiotis and Stelios Stamatakis, who have pooled their efforts as part of their firm […] Read the full story on GreekReporter.com.