The island has several caves known from ancient times many of which include remarkable archeological findings. The most interesting caves in Rhodes are:
- PERIERGES CAVE in Rhodes city (NE) which looks like aqueduct and was considered to be Nymph’s sanctuary.
- KALAMONIAS CAVE, which is hard to access, is of great archaeological importance as the dwelling of the island's earliest inhabitants (same is believed for Koumelos Archangelos Cave).
- MAKAROUNA CAVE, which has been adapted for tourist visits, lies at the edge of the village. Next to it flows the SPRING of NYMPHI, from where Rodos receives its water, including bottled.
- KOUMELOU CAVE in Archaggelos. Located 3 km away, on the peak of the hill that bears the same name. This cave is of considerable archeological and speleological interest. Recent excavations have brought to light vases and other artifacts dating back to the Neolithic and Mycenaean periods, thus indicating that the aree was inhabited during ancient times.