The stacks are primarily composed of calcarenite, a porous sedimentary rock prone to rapid erosion by saltwater and wind.
The area is officially part of the 'Area Marina Protetta' conservation zone to protect its fragile limestone ecosystem.
The local sea caves at this site are remnants of ancient collapsed karstic tunnels that once extended further inland.
Archaeological surveys in nearby coastal grottos have identified traces of human activity dating back to the Neolithic period.
The Sant’Andrea Sea Stacks are a series of natural limestone formations located along the Adriatic coast of the Salento peninsula. These stacks have been sculpted by millennia of coastal erosion, resulting in distinct arches, columns, and sea caves. The site serves as a popular swimming and cliff-jumping destination characterized by its clear, crystalline water and rocky shoreline. It is situated within the protected marine area of the Melendugno municipality. The formations provide habitat for various marine species, often visible to snorkelers swimming between the stacks.
From the elevated coastal path on the southern side looking north, capturing the stacks against the contrast of the deep blue water.
Bring high-quality water shoes, as the shoreline consists of sharp limestone and slippery rocks.
Visit with a mask and snorkel to observe the diverse marine life thriving in the crevices of the submerged stacks.
Apply sun protection early; the white limestone reflects UV rays, significantly increasing sun exposure.
Attempting to swim out to the outer stacks when the sea is rough, as current patterns can become unpredictable around the narrow arches.
Respect the marine protected status by not climbing on the fragile stacks or disturbing local wildlife; remove all personal trash.
