Olympia Odos: The case of the Panagopoula Tunnels

The Korinthos - Patra section of Olympia Odos, has 12 new tunnels under construction, or completed, totaling 16klm. Four of them, totaling 8.2klm, comprise the Panagopoula area tunnel cluster, between Aegio and Rio. There is where the largest tunnel of the Project, and the third largest in the country, which is 4klm long. http://www.olympiaodos.gr