IOWT Traversata delle Eolie — Vulcano

Open water swimmers navigate without artificial reference lines, taking their bearings directly from sea stacks of solidified magma. This is the setting for the IOWT Traversata delle Eolie — Vulcano, an open water swimming race held in the Tyrrhenian Sea off the island of Vulcano in the Sicilian Aeolian archipelago. Organized by the Italian Open Water Tour, the competition serves as the final stage of the tour and its season challenge. The competition features five distinct races suited to different distances and styles: the 6K Hard Swim, the 3K Super Smile Swim, the 1.8K Smile Swim, a 900-metre by three-leg Relay Swim, and a 500-metre breaststroke sprint known as La Gara Impavida.

The courses turn the surrounding volcanic geography into natural navigational beacons, taking competitors past an offshore sea stack and beneath the gaze of the active volcano. In past editions, the Hard Swim course led swimmers through a scenic passage directly in front of the Lipari sea stacks. Autumn conditions in the bay can be astonishingly calm, with past swimmers describing the sea as a dream where the water forms a glass-like mirror reflecting the volcanic slopes. The crossing has inspired moving team performances, including two swimmers who tackled and completed the entire 6000-metre Hard Swim tethered together by a 50-centimetre rope. The racing schedule draws to a close with La Gara Impavida, an ironic 500-metre breaststroke dash where competitors celebrate at the finish with an aperitif of cold beer. As evening arrives, swimmers and organizers gather on the black volcanic sand beach of Vulcano for a sunset party to celebrate the close of the tour.

Gran Cratere and Vulcanello: the volcanic waters

The island of Vulcano owes its existence to the immense tectonic collision of the African plate driving into the Eurasian plate. This subduction created the Aeolian volcanic arc across the southern Tyrrhenian Sea, part of an extensive underwater mountain system that includes the submerged peaks of Marsili and Palinuro. The Gran Cratere della Fossa forms a vast volcanic bowl spanning approximately 500 metres across. The volcano’s last explosive eruption concluded in 1890. Heat still pulses through the slopes, where surveys of groundwater wells along the volcanic flanks recorded intense thermal warmth rising from the depths. Vulcanello is a low lava plateau shaped by multicolored volcanic tuffs. Vulcanello originally erupted from the sea as an isolated islet in 183 BCE. It remained separated from the main island for centuries until a final eruption in the 16th century laid down a 300-metre sandy isthmus that permanently joined the two landmasses.

The Faraglioni of Lipari: volcanic necks in the strait

Across the strait separating Lipari and Vulcano stand the Faraglioni of Lipari, two isolated rock formations named Pietra Lunga and Pietra Menalda. These towering sea stacks are volcanic necks, the fossilized cores of ancient vents where magma solidified inside volcanic chimneys. Sheer pillars of dense rock rise vertically out of deep blue water. According to ancient literary tradition, these monoliths correspond to the legendary Wandering Rocks described in Homer’s Odyssey. Pietra Lunga provides an isolated haven for the Aeolian cornflower, a rare botanical species endemic to these islands. On the nearby peninsula of Vulcanello, the lava fields support another rare survivor: the critically endangered Aeolian wall lizard, which clings to this fragile volcanic habitat.

The Lipari channel: Neolithic obsidian and Punic naval battles

Between 5500 and 4000 BC, the archipelago served as the undisputed Mediterranean crossroads for the obsidian trade, exporting shiny black volcanic glass that ancient communities worked into sharp cutting tools. By the second millennium BC, maritime routes linked Mediterranean trading ports with tin arriving by sea all the way from Britain. In 260 BC, the Battle of the Lipari Islands was the first recorded naval confrontation of the Punic Wars and the very first time Roman warships fought at sea. The nearby port of Lipara held immense strategic importance, threatening Roman sea communications through the Strait of Messina. Moving under cover of darkness, a Carthaginian naval squadron arrived at night and trapped seventeen Roman ships inside the harbour.

Standard quinqueremes were formidable warships measuring 45 metres in length and 5 metres across the beam. Each vessel was propelled by 280 rowers alongside twenty officers and deck crew, designed to maneuver into position and strike opposing galleys with a 270-kilogram bronze ram equipped with three shearing blades at the waterline.

Porto di Ponente: the black sand beach and coastal life

Porto di Ponente is a sheltered natural bay guarded at its seaward entrance by the Scoglio delle Sirene. The bay is enclosed by the narrow sandy isthmus that connects Vulcano to Vulcanello, a fragile natural bridge that winter seas occasionally submerge when heavy storms sweep through the channel. This sandy strip encloses one of only two coastal lagoons found anywhere in the Aeolian archipelago, the other situated at Punta Lingua on Salina.