Did you know there are a number of little-known islands near Santorini that tell the story of one of the most powerful volcanic eruptions in history? These islets are all part of the same volcanic complex that created the Santorini Caldera over 3,600 years ago. Visiting them offers not only stunning natural beauty but also a deep dive into the geological forces that shaped this unique Mediterranean region.

The history of the Santorini Caldera

The islands near Santorini were formed by a series of volcanic eruptions, the most notable of which occurred around 1600 BCE. Known as the Minoan eruption, it was one of the largest volcanic events in recorded history. This catastrophic eruption caused the center of the island to collapse, forming the dramatic caldera that Santorini and its neighboring islets now surround. This event forever changed the landscape and contributed to the creation of the islands we can visit today.

Therasia 

Therasia, located just a short boat ride from Santorini, is one of the most serene islands near Santorini. Although it is much quieter than its famous neighbor, Therasia offers a glimpse of what Santorini might have been like before it became a tourist hub. With its traditional villages, untouched landscapes, and fewer crowds, Therasia is perfect for those looking to escape the busy streets of Fira and Oia. You can hike to Manolas, the island’s main village, perched atop a hill, and enjoy stunning views of the caldera. For a more peaceful experience, enjoy a panoramic meal at one of the waterfront tavernas in Korfos port.

If you prefer to enjoy your well-deserved lunch or dinner after sightseeing, book a table at Sunset Tavern for a scrumptious lobster spaghetti or Basalt Restaurant for a juicy Wagyu steak.

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Aspronisi

Aspronisi, another pocket-size island near Santorini, is less well-known and less accessible than Therasia. This uninhabited islet is primarily a place to pass by during boat tours around the caldera. Its name, which means “white island,” comes from its striking appearance, with white volcanic rock layers visible on its cliffs. While Aspronisi cannot be explored in depth by tourists, it’s an important part of the volcanic history of the region and is often included in sightseeing tours.

And the two must-visit islands near Santorini are..

The Kameni islands, located in the heart of the caldera, are the centerpiece of Santorini’s volcanic history. These islands, Nea Kameni (new Kameni) and Paleo Kameni (old Kameni), are the result of more recent volcanic activity, with Nea Kameni still considered an active volcano. 

Nea Kameni is one of the most popular islands near Santorini for tourists. You can visit the island as part of a guided boat tour and hike up to the crater of the volcano. The hike, which takes about 30 to 45 minutes, is moderately challenging but rewards visitors with incredible views of the caldera and surrounding islands. The terrain is covered in black volcanic rock, and you’ll even see steam vents reminding you of the island’s active volcanic status.

After your hike, you can sail over to Paleo Kameni to experience its scenic Santorini hot springs. The warm, sulfur-rich waters are said to have therapeutic properties, and many boat tours include a stop here for a relaxing dip. The contrast between the cool Aegean waters and the warm springs is a memorable experience and one of the top activities on the islands near Santorini.

Exploring these islands near Santorini not only offers incredible natural beauty but also a deeper understanding of how Santorini and its neighboring isles were formed. From the peaceful charm of Therasia to the dramatic volcanic landscapes of Nea Kameni, the islands near Santorini are a must-visit for anyone interested in geology, history, or simply soaking in the stunning scenery. With easy access from Santorini, these volcanic islands provide a perfect escape from the crowds and an opportunity to connect with the raw, natural forces that have shaped this magical region.

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