Beneath the "Cove of Mysteries": The Discovery of Three Rare 13th-Century Shipwrecks in Menorca

In the crystalline yet often temperamental waters off the coast of Ciutadella, Menorca, a team of archaeologists has unveiled a maritime time capsule that challenges our understanding of medieval Mediterranean trade. Known locally as the "Cove of Mysteries" (Cala en Busquets), this site has recently yielded three 13th-century trading vessels, dubbed Busquets I, II, and III. These wrecks, preserved for over seven centuries beneath layers of sediment, offer a rare glimpse into a pivotal era when the Balearic Islands served as a volatile crossroads between Christian kingdoms and Moorish caliphates.

The discovery, spearheaded by the Menorca Shipwreck Project in collaboration with the New York City-based Explorers Club, represents one of the most significant underwater archaeological finds in the region in decades. Unlike the more common Roman-era wrecks that dot the Mediterranean floor, these medieval vessels provide evidence of a sophisticated, interconnected economy operating during the height of the Reconquista—the centuries-long campaign by Christian states to recapture territory from Muslim rulers on the Iberian Peninsula.

Main Facts: A Triple Discovery in the Depths

The Busquets shipwrecks are distinguished not only by their age but by the circumstances of their preservation and the unique nature of their cargo. For years, the site was overlooked or misidentified. It was only through a combination of persistence by local archaeologists and modern carbon-dating technology that the true historical value of the cove was realized.

Take an Exclusive Look at Three Newly Discovered Medieval Shipwrecks in Menorca's 'Cove of Mysteries'

The Site and the Ships

The "Cove of Mysteries" is an ancient harbor off Ciutadella, a city on the western end of Menorca. While the cove contains debris spanning two millennia, the focus of the current expedition is a cluster of three vessels from the mid-13th century. These ships appear to have sunk simultaneously, resting in overlapping positions on the seafloor.

Key Findings

Temporal Rarity: 13th-century wrecks are exceptionally rare in the Western Mediterranean. Most medieval-era archaeological sites were destroyed during 19th-century harbor expansions.
The "Artifact of the Decade": A 13th-century encolpium—a bronze or precious metal religious reliquary worn by high-ranking clergy—was recovered from the site.
Cross-Cultural Cargo: The vessels contained a mixture of Christian artifacts and Islamic pottery, proving that trade continued between warring religious factions.
Preservation through "Invisible" Cargo: Because the ships carried wooden barrels rather than the bulky ceramic amphorae used in Roman times, they remained largely invisible to looters for 750 years.

Chronology: From First Sighting to 2025 Breakthrough

The journey to identifying the Busquets wrecks has been a decades-long endeavor marked by shifting academic theories and technological advancements.

2009: Initial Survey: Catalan archaeologist Xavier Aguelo Mas first began surveying Cala en Busquets. While he suspected the presence of significant medieval remains, the prevailing academic consensus at the time suggested the visible wreckage belonged to 18th-century vessels.
2023: Formal Excavation Begins: With funding and support from the Menorca Shipwreck Project and the Explorers Club, a full-scale excavation was launched. This allowed divers to move beyond surface surveys and begin the painstaking process of removing centuries of sediment.
October 2025: The "Chocolate" Dive: During a period of near-zero visibility—described by Aguelo Mas as diving in "chocolate"—the team pushed forward with critical recovery operations. It was during this phase that the sophisticated "Queen Elizabeth" suction technique was perfected to clear the site.
2025: Wood-Dating Results: Dendrochronological and carbon-dating analysis of the ship’s timbers officially moved the timeline. The results confirmed the ships were from the late 1240s, a period when Menorca was still under Moorish rule but surrounded by Christian-conquered islands.
Spring 2027: Planned Publication: The research team expects to release a comprehensive peer-reviewed paper detailing the full scope of the findings, including the contents of the encolpium.

Supporting Data: The Science of Sinking and Preservation

The discovery of the Busquets wrecks provides a unique case study in both marine geology and the evolution of maritime logistics.

The Role of Meteotsunamis

Archaeologists believe the ships were victims of a rare meteorological phenomenon known as a rissaga, or meteorological tsunami. Unlike seismic tsunamis caused by earthquakes, rissagas are triggered by rapid changes in atmospheric pressure. These surges can cause sea levels to fluctuate by several meters in a matter of minutes. In a narrow cove like Cala en Busquets, such a surge would have created a violent "washing machine" effect, smashing the vessels against the rocky coastline or each other before dragging them to the bottom. The fact that Busquets I, II, and III are clustered together suggests they were anchored in the harbor when a single, catastrophic rissaga struck.

The "Amphora vs. Barrel" Theory

One of the most compelling aspects of the find is why it remained unlooted. In underwater archaeology, the phrase "the barrel killed the amphora" explains a major shift in maritime history. Roman ships used ceramic amphorae to transport wine and oil; these jars are durable and create large, visible mounds on the seafloor that act as beacons for treasure hunters.

By the medieval period, merchants had switched to wooden barrels. While more efficient for transport, these barrels biodegrade over time. Without the tell-tale mound of pottery, the Busquets wrecks looked like little more than scattered timber and sediment, protecting them from the pillaging that has stripped many Roman sites of their historical value.

The "Queen Elizabeth" Technique

To excavate in the murky, high-sediment environment of the cove, the team utilized a specialized hand-motion technique dubbed the "Queen Elizabeth" by diver Kevin Carrigan. By mimicking the late monarch’s signature swivel-wave, divers gently stir the top layer of silt into suspension, where it can be vacuumed away by a discharge tube without damaging the fragile artifacts beneath.

Official Responses and Expert Perspectives

The academic community has reacted with significant interest to the Menorca finds, noting that the site fills a major gap in the Mediterranean’s medieval record.

Xavier Aguelo Mas, the lead archaeologist, reflected on the long struggle to prove the site’s significance. "After the bulls pass by, everybody knows," he remarked, using a Spanish idiom to describe how his peers only recognized the site’s value once the evidence became undeniable. "The Busquets were the bulls."

Beverly Goodman-Tchernov, a marine geoarchaeologist at the University of Haifa, emphasized the rarity of the find. "Shipwrecks from this period are relatively rare in the Mediterranean archaeological record, particularly outside the eastern part of the region," she noted. She attributed their survival to the "fortuitous decision" of modern planners to build Menorca’s main commercial harbor on the opposite side of the island, leaving the Cove of Mysteries undisturbed by modern dredging.

Trevor J. Wallace, the project founder and expedition leader, highlighted the human element of the discovery. "It’s an unraveling story still," Wallace said. He described the recovery of the encolpium as a moment of pure serendipity, initially mistaking the black, encrusted corner of the reliquary for contemporary trash before realizing he was looking at the figure of a king with a scepter.

Implications: Trade, War, and Cultural Exchange

The discovery of the Busquets shipwrecks has profound implications for our understanding of the 13th-century Mediterranean, specifically regarding the "Convivencia"—the period of coexistence between Christians, Muslims, and Jews.

A World Interconnected

The presence of Islamic pottery alongside a high-ranking Christian reliquary on the same trading vessels suggests that economic interests often superseded religious animosity. In the 1240s, Menorca was a Moorish taifa (principality) that paid tribute to the Christian Crown of Aragon. The cargo suggests a complex trade network where goods flowed freely between the Islamic Maghreb, the Moorish communities of the Iberian Peninsula, and the burgeoning Christian empires of the north.

As Marcel Pujol Hamelink, an expert on medieval shipbuilding, noted, the finds offer proof that these were "not two worlds apart." The ships represent a shared maritime culture where technology and commerce acted as a bridge between faiths.

Historical Erasure and Recovery

The history of medieval Menorca is often fragmented because many records were destroyed during the conquest by Alfonso III of Aragon in 1287. By excavating these ships, archaeologists are essentially recovering "lost pages" of the island’s history. The encolpium, currently undergoing desalination at the Museum of Menorca, may contain parchment or relics that could identify the specific ecclesiastical figures involved in these trade missions.

Future Outlook

Work on Busquets III is ongoing, and the team remains hopeful that further vessels lie buried in the deeper sediment of the cove. As the desalination and conservation of the current artifacts continue, the "Cove of Mysteries" is slowly transitioning from a site of local legend to one of the most important maritime museums in the world. The project serves as a reminder that even in the most well-traveled waters, history remains hidden, waiting for the right combination of technology and persistence to bring it back to the surface.