A brisk half-day boat tour from Fira to Nea Kameni and Palaia Kameni that combines a short crater hike with a swim in natural hot springs. Ideal for cruise visitors and those short on time, it delivers volcanic geology, warm thermal waters, and strong caldera views in three hours.
More ways to explore the area's outdoor wonders
You step off the small ferry into a bright caldera wind that seems to push you toward the smoking rock. The boat cuts across the blue of the Aegean in under 15 minutes to the raw black of Nea Kameni; sulfur whispers from fissures and the trail to the crater climbs over jagged basalt that still remembers fire.
Difficulty
moderate
Duration
3 hours
Fitness Level
Light to moderate fitness; able to climb short uneven paths and swim about 30 meters.
Wildlife
History
The caldera’s shape and the Kameni islets are products of repeated eruptions; a major Minoan-era eruption reshaped the island chain and influenced ancient civilizations.
Conservation
Stay on marked trails, avoid removing rock samples, and use reef-safe sunscreen—boat operators and locals work to minimize impact on the fragile caldera ecosystem.
Reserve your spot on the Santorini - Volcano and Hot springs today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Wear sturdy shoes
Trail to the crater is short but rocky and uneven—closed-toe shoes with grip protect ankles and toes.
Bring swim shoes
Accessing the hot-springs requires climbing down boat stairs and swimming to the bay over rocky seabed.
Protect your skin
Sunscreen, hat, and sunglasses are needed—reflection off the water amplifies sun exposure.
Carry a waterproof pouch
Phones and wallets can get wet during boarding, swimming, and changing conditions at the landing.
Sturdy closed-toe shoes
Protects feet and provides traction on loose volcanic rock during the crater walk.
Swimwear and towel
Needed for the hot-springs swim and quick dry on the return leg.
summer
Water shoes
Comfortable for entering and exiting the boat and protecting feet in the bay.
summer
High-SPF sunscreen and hat
Sun exposure is strong on the deck and exposed crater rim—reapply after swimming.