The intense karst landscape of Crete is associated with the presence of thousands of caves, potholes, sinkholes and underground watercourses. Caves have been used by humans since prehistoric times as places of habitation, burial and worship. A characteristic example is the rock art in Skordalakia Cave near Asfendou, whose exact dating remains a subject of scientific research.

During the Minoan period, many caves became important sanctuaries. Eileithyia, the goddess of childbirth and protector of pregnant women, was worshipped in the Cave of Eileithyia at Amnisos and the Cave of Inatian Eileithyia at Tsoutsouras. The Diktaean Cave and the Idaean Cave became associated with the myth of the birth and upbringing of Zeus in Crete. In later centuries, ancient religious traditions gave way to Christian asceticism, and many caves were transformed into chapels, hermitages and monastic communities. Such places are associated, among others, with Saint Paul, Saint Gerasimos and Saint John the Hermit.

The caves of Crete are also associated with tragic moments in the island’s history. In the caves of Melidoni, Milatos and Kryonerida, as well as in Tigani Cave at Gramvousa, civilians who had sought refuge inside were killed during the period of Ottoman rule and the Cretan revolutions.

Approximately 5,200 caves and potholes have now been recorded in Crete, and their number continues to increase as exploration progresses. Particularly important areas for speleological research are the White Mountains, the Psiloritis Natural Park, Mount Strouboulas and the Sitia Natural Park. The White Mountains are home to Gourgouthakas and Lion Cave, the two deepest explored caves in Greece, both exceeding a depth of 1,100 metres. Exploring them requires specialist equipment, training and the participation of organised speleological teams.

Some caves have been developed and are open to the public, including the Diktaean Cave at Psychro, the Gerontospilios Cave at Melidoni and Sfendoni Cave at Zoniana. Beyond their geological, archaeological and historical value, caves are fragile ecosystems inhabited by bats, invertebrates and other species adapted to the particular conditions of the underground environment. Visits to undeveloped caves should therefore be undertaken with respect for the cave environment and only by properly prepared visitors.