The arch is composed of Cretaceous-age limestone, common to the Cilento and Vallo di Diano National Park.
It is one of the few natural rock arches in the region accessible by foot rather than exclusively by boat.
The geological evolution of this arch is linked to the same karst processes that formed the famous Grotta Azzurra in the nearby cliffs.
The rock formation serves as a natural shelter for a small, secluded beach that is shielded from the prevailing winds.
It is a site of interest for marine biologists due to the presence of specific Mediterranean bio-calcifying organisms on the submerged base of the arch.
The Natural Arch of Palinuro is a prominent limestone rock formation protruding into the Tyrrhenian Sea on the Cilento coast. Created by centuries of marine erosion, this geological feature spans a small sandy cove known as Arco Naturale beach. The structure is part of the Capo Palinuro headland, which is characterized by its complex karst topography and numerous underwater caves. The arch itself connects the main coastline to a detached rocky promontory. Visitors typically access the cove through a pathway descending from the roadside cliffs. The surrounding waters are part of the protected marine area of Costa degli Infreschi e della Masseta. It remains an active site for geological observation and coastal bathing.
From the elevated cliff trail looking down at the arch to capture the contrast between the limestone, vegetation, and turquoise water.
Wear sturdy, closed-toe footwear for the rocky descent down to the beach level.
Bring water shoes if planning to wade, as the seabed under the arch is composed of slippery rocks and pebbles.
Avoid visiting during high tide or heavy sea swells, as waves can wash over the entire beach area.
Attempting to climb or dive off the top of the arch, as the limestone is brittle and the water depth below is unpredictable.
Access may be restricted during winter months due to landslide risks or severe coastal erosion.
Respect the protected marine area rules by not climbing on the fragile rock structure or removing geological samples.
