In the morning, you will be transfered to Athinios port, in order to embark on the traditional boat. The first stop is at the isle of NEA KAMENI, also known as the VOLCANO. There, you will have the chance to climb to the crater of the Volcano, passing by many sulfur vents. After 1 hour, the boat leaves the Volcano and heads to the small islet of PALAIA KAMENI or HOT SPRINGS, as it is called by the locals, formed by several Volcanic eruptions, with many hot springs along its coastline. There, you will have 30 minutes to swim in the warm yellow-green, from the sulfur waters considered to have healing powers. The next stop is at THIRASSIA, the second largest island after Santorini in the Caldera. The island, located opposite of Santorini, is a contrast to it, quiet and undeveloped, untouched by tourism. Here, you will have 2 hours free time to have lunch in one of the many small taverns, or swim in the crystal clear waters. Alternatively, you can walk or take a donkey ride to the top of the island and explore the capital, Manolas village. Afterwards, the boat leaves THIRASSIA and sailing along the coastline of Santorini, returns to Athinios port, where the buses will transfer you back to your hotel.