Rhodes Island holds a surprisingly good number of caves where tourists and residents may go spelunking or just plain satisfying their curiosities regarding these mysterious hollow rock formations. Caving is one of Rhodes more popular daytime activities, and is available with tour guides if requested, though more people opt to go in small groups at their own risk.

The most popular caves in Rhodes Island are the Perierges Spilies, the Kalamonias Cave, the Makarouna Cave, and the Koumelu Cave. These caves are scattered around Rhodes, and have some form of historical or cultural importance to Greece.

The Perierges Spilies is located in the northeastern part of Rhodes Island. Many people have likened it to an aquaduct, and mythologists consider it to be the sanctuary of the Nymphs. It has all the typical cave structures such as stalactites and stalagmites, with some cracks in the roof that allows motes of sunlight to pass through and provide some earthly light to the cave.

The Kalamonias Cave is one of the more difficult to access caves. It is located in the prefecture of Dodecanese, in the Farilaki area. It holds high archaeological importance to Greek culture, as it is discovered to have been the dwelling of Rhodes Island easliest inhabitants, much similar to the Koumelos Archangelos Cave.

The Makaraouna Cave is the most tourist-friendly cave in Rhodes, as it is conveniently located at the edge of the village of Makaraouna. Next to the cave flows the Spring of Nymphi, where the village water is tapped for distribution throughout the island, and bottled for commercial purposes.

Lastly, the Koumelou Cave is located 3 kilometers away from the peak of Koumelou hill. It is one of the caves that bear more archaeologicalical and speleological interest in than others. Recently, excavations have emerged with priceless artifacts such as vases and jugs, which dated back to the Neolithic and Mycenaean periods of Greek history. The cave is proof of Rhodes being one of the ancient origins of human habitation in Greece.