Tunnel of Eupalinos, Ancient tunnel in Samos, Greece
The Tunnel of Eupalinos extends 1,036 meters through Mount Kastro, featuring two levels with an upper passage for maintenance and a lower channel for water transport.
Between 550 and 530 BC, Greek engineer Eupalinos directed teams to dig simultaneously from both ends, creating the first tunnel built using geometric calculations.
The tunnel represents a milestone in ancient Greek engineering, mentioned by historian Herodotus as one of three major technical achievements on Samos island.
Visitors can access 300 meters of the illuminated tunnel section through guided tours, requiring advance reservations and appropriate footwear for the limestone surface.
The construction teams managed to meet in the middle of the mountain with only a slight vertical deviation, demonstrating remarkable precision without modern surveying tools.
Location: East Samos Municipality
GPS coordinates: 37.69459,26.93000
Latest update: May 27, 2025 07:02
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