Day 3: GYALI - NISYROS Early in the morning, we will have a swimming break at a bay of Gyali Island on the way to Nisyros Island. The volcano on Nisyros erupted in 1422 and is still active. Nikea village, located on the side of the crater is constituted with white streets and a mosaic-style square. You can take an optional bus tour to the crater (volcano). Your boat will stay here for the dinner and the overnight.