Sinji

GREECE’S LONGEST UNDERWATER RIVER

FULL CAVE / TECHNICAL CAVE LEVELS

Most of the drive to the spring follows the coastline and provides spectacular views. The last portion before reaching the spring is on a small, easy mountain road and is found just before the village of Kandyla of Arcadia. Sinji is the spring of the country’s largest underground river and is home to Greece’s deepest cave, exceeding the depth of 186 m and a penetration of over 800 m.

To enter the cave, divers must walk through a short, shallow, natural pool. Once in front of the cave’s entrance, divers must conduct their last checks before submerging entirely into the water. The depth of the pool at the entrance varies depending on rainfall and the season, from 1 m to a mere 0.5 m, which makes it a bit challenging to enter. To pass through the entrance, divers must negotiate a tight restriction by crawling through; though all types of configurations can successfully pass, contact with the walls and roof is certain. The restriction is short and not dangerous, but could be a bit of a challenge for a novice diver.

Once through the restriction, divers arrive at the first chamber where the main guideline begins. Already the characteristic sharp formations of the cave are evident. The dive begins at a depth of about 7 m and unless divers decide to visit the “wells” that drop to more than 186 m, depth seldom exceeds 20 m anywhere in the cave.

Photo: Laurent Miroult

CAVE DEPTH

  • Max: Deep wells with > -186 meters (max depth unknown)
  • Shallow zone average: -8 meters

WATER TEMPERATURE

  • 11-13C

AVERAGE VISIBILITY

  • >30

RESTRICTIONS

  • Minor restriction entrance

LINE CONDITION

  • Good line everywhere, including side passages
  • Detailed markers with letters

FLOW

  • Most of the time little to no flow

SEDIMENTS

  • In some areas

PERCOLATION

  • In non visited areas and smaller passages

Photo: Laurent Miroult

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