Sometimes called East Aegean Islands, sometimes North Aegean Islands or Northeastern Aegean Islands, this are all the islands in the Aegean Sea which do not belon to the Sporades, Cyclades, and Dodecanese Islands. This are mostly numerous islands close to the Turkish coas (actually an ongoing point of dispute between the two countries) and some islands at the northern coast of the Aegean.
The islands are mostly composed of limestone, and many of them are karstified, so there is a huge amount of caves to be found. However, only a few are open to the public.
More than 67 caves have been discovered on Samos, most of them are situated at the west part on mountain Kerki. The most famous are the cave of Kakoperato near the village Kosmadei, the cave of Panagia Makrini, the cave of Aghia Triada near the village Kallithea, and the cave of Pythagora in which, according to legend, Pythagoras found refuge when he was persecuted by Polycrates, the tyrant of Samos.