Santorini Volcanic Islands Cruise with Hot Springs Visit, Volcano Hike, Thirassia & Oia

- A traditional Greek boat cruise combines volcanic hikes, thermal spring swims, and island exploration across Santorini’s caldera. - Guided volcano walks, hotel transfers, safety equipment, and free time on Thirassia are included in this 6-hour cruise. - Explore Nea Kameni’s active crater, swim near Palea Kameni’s sulfur springs, and admire Santorini’s dramatic coastline. - Upgrade your experience to include round-trip hotel transfers and sunset views beneath Oia’s whitewashed cliffside village.