Grotta della Poesia (Poetry Cave) is one of the most well known natural rock formations inside the archaeological site. It's a natural pool that's recognized as one of the most beautiful natural pools in the world. The name originates from a legend that tells the story of a Princess who liked to bathe in the waters of Grotta della Poesia. In turn the beautiful princess has become the muse for countless poets in the Salento peninsula.
In reality the caves were most likely used for religious purposes. There are Messapian inscriptions on the wall that helped to decrypt the original purpose of the caves. From these inscriptions it becomes very clear that the are was dedicated to the worship of god Taotor, a Messapian deity.