Volcano Crater (Nea Kameni)

Nea Kameni is a stark and otherworldly volcanic island born from Santorini's 1707 eruption, offering visitors a rare chance to walk across still-warm geothermal terrain and peer into the crater that shaped the Cyclades. The barren moonscape of grey and black volcanic rock, punctuated by occasional steam vents and sulfurous springs, transports you to the raw geological forces that continue to simmer beneath the Mediterranean. A guided boat tour is the primary way to reach this uninhabited island, making the experience feel like a genuine expedition into Earth's interior.