|A significant part of the island is made up of limestone rocks, thus forming approximately 192 caves, of which the majority are quite small. Several of the caves contain stalactites, whereas findings of significant value such as natural wells have been discovered in others. Each of the caves have been subject to the reverence of their visitors.
Eastern & Southern Lesvos
- The Cave of St. Bartholomew. 60m long, the cave of St. Bartholomew is known for the prehistoric pottery found there, which are now located at the archaeological museum of Mytilene, in Kagiani, Mytilene.
- Magaras Cave. The longest cave in Lesvos, reaching 120m, located in Alifanta, Mytilene.
- The Cave of St. Ioannis (John) or otherwise known as “Fousa”. With a length of 95m and findings which are now located in K’Tax Office of Antiquities in Myxou, Lesvos.
- Glastra or Kasteli, Agiassos
- Kourtzi, Mytilene
- St. John the Refugee, Thermis
- St. Isidoros, Plomari
- Anydros, Plomari