Moment · Santorini
Santorini Volcano & Hot Springs
Explore the natural beauty and wild scenery of the Santorini caldera.
One of Santorini’s definitive landmarks is the active volcano and caldera dominating the island’s geography. This geological wonder shaped Santorini’s emergence while bestowing unique characteristics. Exploring the volcano and hot springs grants visitors insight into the powerful natural forces that created Santorini.
How was the Santorini caldera formed?
Santorini was originally a single landmass before massive eruptions around 1600 BCE caused the center to collapse and the sea to rush in. This cataclysmic event formed the flooded caldera, gave rise to the current crescent-shaped Santorini, and spread volcanic matter that shapes the islands’ rock and soil.
In the caldera sea, Nea Kameni is Santorini’s present-day active volcano formed by continued lava flow after the Minoan eruption. Boats offer close-up access to see smoke rising and feel the heat. Hiking the rugged landscape reveals petrified magma and sulfuric hot springs. Nearby Palea Kameni, the caldera’s oldest lava island, also provides boat or hiking access to volcanic features like hot springs.
Inland at Santorini’s southern tip, ancient eruptions formed the breathtaking rock formations of Cape Exomitis. Hike among wind-carved lava statues, jagged cliffs, and sea-filled craters at this wild headland shaped by the volcano’s activity.
What thermal springs are at the caldera?
Thermal springs enriched by the complex volcano system exist around Santorini, offering visitors the chance to soak in these mineral-rich waters. On Palea Kameni, sink into the warm sea at the natural hot springs where the ocean mixes with underground heat.
Nea Kameni sits in the heart of the caldera and features warm and therapeutic waters. These consist of sulfur, iron, and manganese, which have been known to be beneficial to the body.
The popular beach town of Kamari houses the inviting Ancient Thera Hot Springs. Relax in a series of open-air pools facing the sea. The natural spring water provides relaxation as well as purported therapeutic benefits.
Near picturesque Perissa Beach, excavated ruins mark ancient thermal baths at Gialos Baths dating from the 5th century BC. Though no longer functioning, you can visit this historic bathing complex.
The island also produces thermal sea mud containing minerals and microalgae from the volcano, thought to nourish skin. Many hotels and spas incorporate this unique mud into health and beauty treatments.
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Request a quote →Is the Santorini volcano worth it?
We think the Santorini volcano is definitely a must-see when traveling to Santorini—it’s one of the wonders of the Aegean Sea.
Exploring these fascinating volcanic remnants offers insight into the powerful natural genesis of Santorini.
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More Moments in Santorini
Sailing Santorini’s Caldera at Golden Hour on a Private Charter
Santorini's crescent is what was left when a vast eruption around 1600 BC, one of the largest in recorded history, caused the heart of the island to collapse into the sea. Today a ring of sheer cliffs, up to 300 meters high and banded with ash and pumice, surrounds a flooded caldera where the volcano is still active.
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Walking to Skaros Rock from Imerovigli, Santorini
You set out from Imerovigli down a stretch of concrete stairs; soon the way becomes a narrow earth path as the caldera falls away on both sides. In front of you rises Skaros Rock, a volcanic promontory thrust out over the sea. Santorini's capital once stood here; today it makes one of the best short walks on the island. Its position was no accident.
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The Red Beach
Also known as Kokkini Beach, Red Beach gets its nickname from the signature hue of its sand and surrounding cliffs. The vibrant crimson color comes from iron oxide minerals deposited from the area’s volcanic origins. Sitting at the base of giant 300-foot reddish rock walls, vibrant red sands slope into the turquoise Aegean Sea—creating a breathtaking contrast of colors. This natural beauty evokes a primordial, almost otherworldly atmosphere.
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