Efpalinos tunnel was built around 550 B.C. Two team started he excavation from different sides of the mountain simultanously. They managed to meet in the middle with very small overlap – approximately 60 cm. Having in mind that this was 6th century B.C., the was quite an achievement.
- Aperture: ƒ/1.8
- Focal length: 3.99mm
- Flash fired: no
- ISO: 40
- Location: 37° 41′ 29.31″ N 26° 56′ 26.29″ E
- Shutter speed: 1/25s
