Board from Fira’s old port and cruise the Santorini caldera to Nea Kameni, swim near Palea Kameni’s hot springs and explore the quieter island of Thirassia. This six-hour outing blends volcanic history, warm mineral waters and traditional island life.
Board from Fira’s old port and cruise the Santorini caldera to Nea Kameni, swim near Palea Kameni’s hot springs and explore the quieter island of Thirassia. This six-hour outing blends volcanic history, warm mineral waters and traditional island life.
You step down the cable car into a pocket of sea and rock—Fira’s old port yawns beneath sheer cliffs and the boat waits, white against the dark caldera. The hull noses out into the Aegean; the cliffs shrink, the caldera widens, and the salt wind carries a faint sulfur breath that hints at the island’s volcanic past.
Verified experiences and guided adventures in the surrounding area.
Operated by Let's Book Travel · Fira, South Aegean (Santorini)
You step down the cable car into a pocket of sea and rock—Fira’s old port yawns beneath sheer cliffs and the boat waits, white against the dark caldera. The hull noses out into the Aegean; the cliffs shrink, the caldera widens, and the salt wind carries a faint sulfur breath that hints at the island’s volcanic past.
This half-day cruise threads together Santorini’s geology and living culture. The caldera is the collapsed lip of a massive Bronze Age eruption that reshaped the Aegean; Nea Kameni is one of the younger volcanic islets, its black pumice and fumaroles recording eruptions over the last few centuries. Guides will point out lava flows and explain how the Minoan eruption altered trade and settlement patterns. Palea Kameni’s sulphurous springs invite a brief swim—the mineral-rich water feels warm against the skin—and Thirassia offers a contrasting human story: quiet stone villages, narrow lanes and views back across to Santorini’s rim that show how the island looked before tourist development.
Practical edge: the tour runs about six hours, departs from Fira’s old port (or Athinios with transfers), and includes stops for a 1.5-hour volcano walk, a hot-springs swim, and a two-hour visit to Thirassia. Expect uneven volcanic trails, strong sun, and limited shade—sturdy shoes, water, and sun protection are essential. Swimming to the hot springs requires competent ability; life jackets are used by some operators. Small fees (volcano guide/entrance, cable car) and lunch on Thirassia are typically paid on-site. Time your trip for morning or late afternoon to avoid the hottest light and the largest crowds.
easy.
6 hours.
Suitable for most fitness levels but requires ability to climb short, rocky trails and swim to the hot springs if participating
The tour lasts about six hours and typically stops at Nea Kameni (volcano), Palea Kameni (hot springs) and Thirassia, with boarding from Fira’s old port or Athinios if transfers are included.
Yes—there is usually a small on-site fee (around €5) for the guided walk to the volcanic ridge, paid to local guides or site staff.
You must be a competent swimmer; the boat anchors roughly 20–30 meters from the shallow spring areas and you’ll enter open water. Follow crew instructions and use provided life jackets if recommended.
No—lunch on Thirassia is at your own expense; bringing snacks and water is advised if you prefer not to buy food ashore.
The Santorini caldera formed after a massive Bronze Age eruption; subsequent eruptions built Nea and Palea Kameni and reshaped local settlement, influencing Aegean trade and culture.
The volcanic islets are fragile—stick to established paths, don’t take rocks or shells and pack out all trash; operators often limit landing areas to protect soil and vegetation.
Let's Book Travel operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




You step down the cable car into a pocket of sea and rock—Fira’s old port yawns beneath sheer cliffs and the boat waits, white against the dark caldera. The hull noses out into the Aegean; the cliffs shrink, the caldera widens, and the salt wind carries a faint sulfur breath that hints at the island’s volcanic past.
You step down the cable car into a pocket of sea and rock—Fira’s old port yawns beneath sheer cliffs and the boat waits, white against the dark caldera. The hull noses out into the Aegean; the cliffs shrink, the caldera widens, and the salt wind carries a faint sulfur breath that hints at the island’s volcanic past.
This half-day cruise threads together Santorini’s geology and living culture. The caldera is the collapsed lip of a massive Bronze Age eruption that reshaped the Aegean; Nea Kameni is one of the younger volcanic islets, its black pumice and fumaroles recording eruptions over the last few centuries. Guides will point out lava flows and explain how the Minoan eruption altered trade and settlement patterns. Palea Kameni’s sulphurous springs invite a brief swim—the mineral-rich water feels warm against the skin—and Thirassia offers a contrasting human story: quiet stone villages, narrow lanes and views back across to Santorini’s rim that show how the island looked before tourist development.
Practical edge: the tour runs about six hours, departs from Fira’s old port (or Athinios with transfers), and includes stops for a 1.5-hour volcano walk, a hot-springs swim, and a two-hour visit to Thirassia. Expect uneven volcanic trails, strong sun, and limited shade—sturdy shoes, water, and sun protection are essential. Swimming to the hot springs requires competent ability; life jackets are used by some operators. Small fees (volcano guide/entrance, cable car) and lunch on Thirassia are typically paid on-site. Time your trip for morning or late afternoon to avoid the hottest light and the largest crowds.