Melissani Cave or Melissani Lake, is a cave located on the island of Kefalonia, northwest of Sami, about 5 km SE of Agia Efthymia, NE of Argostoli and NW of Poros. The Ionian Sea lies to the east with the Strait of Ithaca. Forests surround the cave and the mountain slope is to the west. Near the cave is the entry to the cave with parking lots and is passed almost in the middle of the main road linking Sami and Agia Efimia especially to the northern part of the island. The cave features a lake that are surrounded with trees and forests The cave features a sky-blue lake covered with stones at the bottom. Plants are at the door of the cave. The color of the rocks which are stucco to honey-like brown is at the door of the cave. The lake is also inside the cave. The cave was rediscovered in 1951 by Giannis Petrocheilos.