Melissani Cave: A Sunlit Underground Lake You Tour by Boat

On Kefalonia, just outside the port town of Sami, part of a cave roof fell in long ago and left a lake open to the sky. Sunlight drops through the gap onto water so clear and turquoise that the small wooden boats seem to float on light. A visit is short and fits easily into a day on the island's east coast. Time it for late morning or early afternoon, when the sun reaches the water.

What is Melissani Cave?

Picture a tall limestone chamber with a hole in its roof, trees and greenery around the rim, and a deep, clear lake below. When the sun stands high overhead, the water turns a glowing blue and the whole cave seems lit from within.

The cave is shaped like the letter B, with two chambers divided by a small island. The first is the sunlit one, under the collapsed roof. The second is dark and hung with large stalactites coated in algae and moss. Many of the stalactites in the dark chamber resemble dolphins, which Greek myth links to the nymphs as their companions and messengers. Electric lights come on in this chamber as the boats pass.

The cave was found in 1951, and visitors have been welcome inside since 1963. Its name comes from a legend: the nymph Melissanthi drowned herself here after the god Pan rejected her love. Excavations in 1962 turned up artifacts from the 3rd and 4th centuries BC, among them figurines of nymphs, which gives the story some weight.

How does the boat tour work?

An underground path and a flight of stone steps lead down to the water. There you board a small wooden boat that holds up to 12 passengers, with a local guide giving commentary, typically in Greek, English, German or Italian. The ride lasts about 15 minutes. It starts with a full loop of the sunlit hall, then crosses to the far wall, where a tiny canal leads into the second chamber. The channel is too narrow for rowing, so the boatman pulls the boat through by a rope fixed to the wall. Swimming is generally not part of the visit, since the boat ride is how most people see the lake.

Budget more time than the ride itself, since you also walk down and climb back up. On busy days, waiting and boarding can stretch the visit to about 45 minutes.

The steps and boat don't suit many mobility needs. A viewing platform above the cave is wheelchair accessible and looks straight down into the lake. It is reached by paved paths that are steep in places. Accessible parking sits close to the entrance, the restrooms include accessible options, and audio guides are available for visually impaired visitors. Staff can help on the day, and the Municipality of Sami can arrange assistance in advance by phone (number below).

When is the best time to visit?

Between about 11:30 a.m. and 2 p.m., the sun is high enough to shine straight through the open roof onto the lake. On a clear summer day, the water glows a vivid blue. Those hours are also the busiest, so for photos, aim for midday and arrive at the start of the window.

Arriving at opening time, or after about 3 p.m., means smaller crowds and a calmer cave. Morning water is often mirror-still. The slanting light early and late in the day has a soft beauty of its own, and the boats seem to hover in it.

September earns high marks. Summer crowds have thinned, the weather is still warm, and the cool cave feels like a refuge. Some photographers prefer the softer autumn light. April and May bring fewer people and wildflowers around the entrance. Winter is quiet, with occasional fog that adds to the mood, but the cave opens on limited days, if at all, and schedules depend on the weather.

What do tickets, prices and hours look like?

The cave opens daily through the main season, May through October. In April and late autumn, the Municipality of Sami sets reduced hours and announces them each year through news notices. In winter, from November through March, opening days have been limited in some years and the cave has stayed closed in others, so check the current notice from the Municipality of Sami before you go. Hours for the 2026-27 winter had not been published at the time of writing.

Last entry is usually 15 to 30 minutes before closing. Hours can also change for holidays, events and weather, so confirm the day before at sami.gov.gr or by calling the municipality at +30 26740 22997.

Adults pay the full fare. A combo ticket for Melissani and Drogarati Cave costs less than two separate tickets and is valid during both caves' opening hours.

In July and August, and often into June and September, book ahead, especially for midday slots. Same-day tickets can run out between late morning and mid-afternoon. Outside summer, you can usually buy at the entrance.

What should you wear and bring?

The cave stays cool all year, so a light jacket is a good idea, and shoes with non-slip soles help on the stone steps. Wear non-slip shoes, and bring a light jacket for the change from the heat outside.

Cameras are welcome, and the natural light does most of the work, so flash is not really needed. A wide-angle lens takes in the big chamber, a polarizing filter cuts glare on the water, and a waterproof case guards against splashes. Pack spare batteries, since the cool air drains them faster. Many photographers like to sit near the front of the boat and look toward the opening in the roof.

A small café near the entrance serves drinks and light snacks. The café and kiosk nearby run daily from May through October and on weekends in winter. Restrooms are near the entrance too.

How do you get to Melissani Cave?

The cave sits just outside Sami, near the village of Karavomylos. Sami lies about 15 miles (24 km) east of Argostoli, the island's capital.

Driving is the easiest option. The route is well signposted and takes about 40 minutes from Argostoli or around 10 minutes from Sami. A large free car park waits at the cave. You can pick up a rental car at the airport, at the port or at your hotel.

Taxis run from Argostoli, but agree on the return fare before you set off. Buses also connect Argostoli and Sami during the day, though timetables change with the season. Buses sometimes skip scheduled stops, so it helps to tell the driver where you're getting off. For current times, call KEFALONIA BUSES at +30 26710 22281.

Ferries reach Sami from several ports:

• Patra: about 3 hours 15 minutes
• Astakos: about 2 hours 12 minutes
• Zakynthos: about 3 hours
• Lefkada: about 3 hours 30 minutes
• Pisaetos on Ithaca: a short crossing

2026 prices: a one-way Patra to Sami passenger ticket costs €15.40, and a car costs €52.90.

Staying in Sami puts you about a mile from the entrance, so you can return at a different time of day. Guided day tours from around the island also pair the cave with Drogarati and Myrtos Beach and handle the driving.

What should you pair it with nearby?

Drogarati Cave makes a natural second stop, and a combo ticket covers both caves for €13. It is full of stalactites and stalagmites, and its acoustics are good enough to have hosted concerts. Allow two to three hours for both caves.

Sami's waterfront tavernas, a few minutes down the road, are the obvious lunch stop. In the afternoon, head to Myrtos Beach, one of the most beautiful in Greece. Then continue to Assos, a quiet fishing village with a Venetian castle about 6 miles (10 km) north of Myrtos, in time for sunset. The full loop of caves, beach and village runs about 37 miles (60 km).