Papanikolis Cave lies on the southwestern coast of Meganisi, near Lefkada. This underwater cave stretches about 120 meters in depth and 60 meters in width. 

Access comes only by boat. Tours leave mainly from Nydri, a popular resort town on Lefkada. Some also depart from Vasiliki or directly from Meganisi. The trip usually includes swimming stops and nearby coves. Tour boats often enter the cave itself, depending on sea conditions.

The cave holds historic importance. During World War II, the Greek submarine Papanikolis used the cave for shelter. Crews hid inside after daring missions in the Ionian Sea. This historical connection gives the cave its name and adds to its intrigue.

Inside, the cave surprises many. Clear turquoise waters sparkle under natural light. Small waves echo against the rock walls. A pebbly beach sits tucked away at the back. Some tours let visitors swim here. The cool, calm water creates a perfect escape from summer heat.

The best time to visit Papanikolis Cave comes early in the day or later in the afternoon. Midday tours tend to get crowded, especially in high season. The sunlight during those off-peak hours also casts magical colors inside the cave. Moreover, the sea usually stays calmer in the morning.

Tour prices vary. Some include snacks, drinks, and snorkeling gear. Others offer quick stops at nearby Meganisi villages like Spartochori. Visitors can also rent private boats for a flexible schedule. Still, checking sea conditions remains important before setting out..