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Sail the Santorini caldera, hike the volcanic cone of Nea Kameni, swim to Palea Kameni’s sulfur springs, and relax on Thirassia. This half-day cruise blends geology, open-water swimming, and island culture into one compact adventure.
Sail the Santorini caldera, hike the volcanic cone of Nea Kameni, swim to Palea Kameni’s sulfur springs, and relax on Thirassia. This half-day cruise blends geology, open-water swimming, and island culture into one compact adventure.
Book with Caldera's Boats Santorini Sea Excursions
Book directly with Caldera's Boats Santorini Sea Excursions for the best rates and real-time scheduling.
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Operated by Caldera's Boats Santorini Sea Excursions · Fira, Cyclades
The boat slips away from Fira and the island’s cliff-face villas tighten into a single, white line. Salt and volcanic dust stitch the air as the caldera widens around you; seabirds wheel and the dark cone of the volcano rises like a wound in the sea. On land, pumice and black lava fields crunch underfoot; from the summit the Aegean plates itself into cobalt bands and neighboring islets appear as small, timeworn islands.
moderate.
6 hours.
Moderate fitness—able to manage a 1.5-hour hike on uneven volcanic rock and a short open-water swim.
No—the 5€ fee to access Nea Kameni is paid on-site and is not included in the tour price.
Yes—non-swimmers can remain on the boat during the hot springs stop and still join the volcano hike and Thirassia visit.
If you choose without pickup, meet at the Santo Star office near the Old Port; access via cable car (approx. €10 each way) or by foot down the stairs (30 minutes). Arrive 45 minutes early to allow for queues.
No—swimming in the hot springs is not recommended for pregnant individuals or those with heart or serious medical conditions due to warm temperatures and exertion.
Santorini’s present shape reflects a massive Bronze Age eruption (often dated around 1600 BCE) that collapsed the central island and created the caldera; the exposed lava fields on Nea Kameni are recent expressions of that volcanic system.
Stay on marked paths and avoid removing volcanic rock; sunscreen and debris can harm marine life—use reef-safe products and pack out trash.
Caldera's Boats Santorini Sea Excursions operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
Book with Caldera's Boats Santorini Sea Excursions
Book directly with Caldera's Boats Santorini Sea Excursions for the best rates and real-time scheduling.
Reserve Now