Santorini is a small group of Greek islands. They were formed due to a ___VOLCANO___ eruption about 3,600 years ago. Volcanos are still very active in the area. Tourists can fly to Santorini or take a ferry and enjoy the ____NATURE____ beauty in summer, when the islands are crowded and busy. In winter Santorini seems _____POPULATED______ and ferry service is not regular. On one side of Santorini, ____VISIT______ get a view of the local villages. This area is ___HIGH______ developed and rich. On another side of the islands tourists can enjoy black sand beaches and swim near the volcano. The third part of Santorini displays ancient ruins. Although this section is not popular among tourists, it is a well­known site for ____ARCHEOLOGY_______.