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Nice boat trip to Caldera, Volcano and Thirasia, Very well organised and we really enjoyed it.


Great crew, with nice fun vibe and very beautiful places to see from the boat!


The trip was exactly as described – and even better! The guide was very knowledgeable and kind. He answered all our questions and remained polite throughout the tour. Everything ran like Swiss clockwork and followed the timeline precisely. Although three hours might seem a bit short at first, it's actually the perfect amount of time to see the active volcano and enjoy a swim in the thermal springs. It was an amazing experience and well worth the price. The hot springs could be a little warmer, but of course, you can’t argue with nature. All in all, a perfect and well-organized trip. Thank you, Caldera Boats and CheckYeti!


Nice small international group (9 persons + the entertaining Captain George and his female assistant). You also really sail under sails and without engine. Women are allowed to navigate, if they like. Good food (fish, seafood pasta, salad...) with white wine, soft drinks and water. One long stop for swimming, fish observing and dinner in front of the Island of Therasia. Stunning Sunset with the red sun going down into the ocean at the horizon...


Amazing experience! Check to see if it’s a windy day bc the trip’s itinerary needed to be adjusted. It was fabulous, nonetheless! Just check weather conditions for a calmer snorkel.


It was so unbelievably great! There were only two of us + 2 skippers who were really nice and funny. The food was extremely plentiful and delicious! The sunset on the “high seas” was fantastic.


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