Boat docks of Herculaneum

The "boat docks" of Herculaneum—more accurately termed the ancient shoreline or boatyard—refer to the coastal area at the southeastern edge of the Roman town of Herculaneum (modern Ercolano, Italy), featuring a series of arched vaults known as "boat houses" or fornici. These structures, built along the pre-eruption beachfront, served as shelters for small vessels, storage, and possibly leisure spaces for the town's elite residents, given Herculaneum's status as a luxurious seaside resort. Buried under up to 20–25 meters of pyroclastic mudflows during the catastrophic eruption of Mount Vesuvius in 79 CE, the area was dramatically shifted inland by post-eruption bradyseism (slow tectonic uplift), now lying approximately 400 meters from the modern shore and 4 meters below sea level. This zone is poignant for preserving the final moments of around 300–340 inhabitants who fled there seeking rescue by sea, only to perish in the intense heat of pyroclastic surges.

Historically, Herculaneum's shoreline was a vital hub for maritime trade and elite villas, contrasting with the more commercial Pompeii. The boat houses, constructed in the 1st century CE using opus reticulatum (net-patterned masonry) and concrete vaults, underscore Roman engineering for coastal adaptation. Excavations began in earnest in 1980–1982 under archaeologist Giuseppe Maggi, uncovering the vaults and initial skeletons; further work in the 1990s expanded findings. A major restoration project, funded by the Packard Humanities Institute and completed in 2024, drained groundwater, stabilized structures, and restored the beach with imported sand, reopening the site to the public on June 19, 2024—the first access since antiquity.

Overall Layout and Architectural Features

The boat docks occupy a linear stretch along the ancient shoreline, integrated into the town's southeastern defensive walls and extending parallel to the sea for about 200–250 meters. The layout comprises 12 semi-subterranean arched vaults (boat houses), spaced at intervals of 5–7 meters, with their open ends facing the beach for easy vessel access. Each vault measures approximately 5–6 meters wide by 3–4 meters high and deep, forming a row of 12 chambers that likely accommodated small fishing or pleasure boats, fishing gear, and temporary shelter. The vaults were built into a low retaining wall of tuff blocks, with concrete barrel vaults reinforced by brick arches to withstand marine exposure and seismic activity (post-62 CE earthquake reinforcements are evident). The beachfront, originally a pebbly strip sloping gently to the water, was fronted by a low promenade or wooden dock inferred from post holes and debris, though no full harbor quay survives.
The site's topography reflects Herculaneum's cliffside position: the vaults open onto a narrow beach backed by the town walls, with access via a posticum (side gate) from Cardo IV Inferiore. Due to bradyseism, the area now sits in a lowered basin, requiring modern drainage channels and protective roofing to combat humidity. Restoration in 2023–2024 elevated the beach to its original level, recreating a walkable sand surface over 100 meters long, with replica skeletons in glass cases for ethical display. Architecturally, the vaults exemplify Republican-era maritime utility: lime-based waterproof plaster on interiors, iron grates for security, and niches for lamps or tools. The 2025 digital reconstruction highlights a nearby boat's plank-built hull, suggesting the docks supported light coastal craft up to 10 meters long.

Detailed Description of Key Features and Vaults

The boat houses are not individually labeled in excavations but grouped by position along the shoreline, from northwest to southeast. Descriptions are based on 1980s–1990s digs and 2024 surveys:

Northwestern Vaults (Boat Houses 1–4): The first four chambers, closest to the town's main gates, yielded fewer skeletons (10–15 total) but abundant artifacts like fishing nets, amphorae shards, and bronze tools, indicating active use as a boatyard. Each features a 4-meter-wide arched entrance with eroded thresholds; interiors show soot marks from lamps, suggesting overnight storage.
Central Vaults (Boat Houses 5–8): The densest in remains, with 20–30 skeletons per vault huddled in fetal positions. Vault 5, for instance, contained a family group (women and children) near the rear, shielded by a partial wooden partition (carbonized traces remain). Arches rise to 3.5 meters, with side benches carved into tuff for seating or securing ropes.
Southeastern Vaults (Boat Houses 9–12): More exposed to surges, these held ~50 individuals on the beach just outside, including men in defensive postures with staffs. Vault 12, the easternmost, preserved the partial boat hull (discovered 1982): a 7-meter-long oak-plank vessel with mortise-and-tenon joints, pine keel, and lead sheathing—typical of Roman lenunculum (small cargo boats).

The restored beach (ca. 50x150 meters) features interpretive paths, with vaults accessible via metal walkways; a modern pavilion houses the boat's fragments under climate control.

Findings: Skeletons, Artifacts, and Scientific Insights

Herculaneum gave us interesting clues about lives of the ancient people. Ancient Romans practiced cremation so we have very few skeletal remains that made it to our days. This is a rare exception. Analyzing the bones we can tell the diets that people had, their lifestyle, a number of kids they might have or any statistical anomalies. For example we an interesting relatively low number of people in the age group of 16 to 25. If you take in consideration that the region was struck by a powerful earthquake in 62/63 AD it would there is such a drastic dip in birth rate and survival rate. People born 16- 17 years prior to the eruption or earlier probably had higher mortality rate after food sources became scarce and granaries with food were destroyed.

Forensic doctors also concluded that the average height for a man in the city of Herculaneum was about 1.70 meters, while for a woman it was around 1.55 meters. Children under the age of 10 years comprised 20.3% of population while another 8.4% of individuals were older than 50 years. The bodies surprisingly had good teeth despite low advancements in dental hygiene and care. However they didn't eat a lot of sugar like we do today so the anaerobic bacteria had less chances to proliferate around teeth. Increased concentration of strontium in the bones of Herculaneum citizens indicated a diet rich in sea food. On the negative side the bodies indicated a lead poisoning. It was particularly visible in bodies those diets was worse indicating their low socio- economic level. It is possible that they got lead poisoning after drinking cheap wine that was artificially sweetened by syrup that was boiled in lead pots. Some of the their symptoms included abdominal pain, cognitive difficulties, weight loss, fatigue, sluggishness and many others. These further decrease their chance of surviving the eruption and escaping to safety. About 27 % of all bodies had some degree of hypoplastic line in the dental enamel. This would suggest that lengthy childhood illnesses were quiet common. Citizens of Herculaneum also showed decreased rate of growing, however the residents were taller than modern day Neapolitans.

One of the most famous victims in Herculaneum is the "Ring Lady" on the top left photo. Judging by her bones analysis and amount of gold that she wore, she must have been a very rich person. She had good bones and fairly good teeth, but there were signs of early periodontal disease. She was about 46 years old. At a height of 157 cm she was actually above average for her time period and probably gave birth to two or three children in her lifetime. She probably ran here in hopes to buy herself boat ride across the bay to safety. Like many residents of Herculaneum she perished.

Another notable body is that of a young teenage girl who died while holding a baby in her arms. Judging by the skeleton shape, the victim never gave birth so it couldn't be her child. Furthermore girl's remains clearly point out to a very harsh life and even malnourishment as a child. This lies in drastic contrast to the bones of the baby she was holding. The baby was well nourished and probably was a child of the owners who probably had the girl as their slave in the household. Apparently the slave girl tried to save master's baby, but they both were buried inside boat's chambers.

Archaeologists who worked here also discovered an interesting skeleton is that of a soldier. He was about 37 years old when he died. At his height of 175 cm he was a giant by the standards of the time. He carried a sword on his right side, uniform and a bag with several coins. The man served for a long time and his left femur (thigh) still carries marks of a stab wound, probably a sword wound. Additionally three of his front teeth were missing either due to a battle or a bar fight. He lies at the entrance of the boat houses so it is logically to assume that he was trying to organize people and calm them down. Once he saw that everyone found their refuge he also entered what looked like a safe haven for them.

Carbonized Herculaneum boat was discovered in one of the docks in 1982. It measured 9 metres in length and apparently was overturn by a natural force of a volcanic avalanche. A skeleton of an oarsman was discovered near by. There was also another body of a soldier with a swords, belt and military uniform found next to him. It is possible that the fisherman and a soldier were killed before they could escape. It is somewhat strange that no one tried to escape the Herculaneum using this vessels after the death of its owner. It is quiet probably that two men simply made runs across the bay of Naples. On one of these runs they was caught by a pyroclastic flow that killed him.

Herculaneum boat is currently can be seen in a site museum known as Padiglione Della Barca or a Boat Exhibit that's been on display since 16 July 2009.

Significance and Recent Developments

The boat docks illuminate the 79 CE eruption's human toll, contrasting Herculaneum's orderly evacuation (few inland skeletons) with the shoreline's chaos—victims likely awaited boats amid darkened skies and earthquakes, per Pliny the Younger's letters. Archaeologically, it advances bioarchaeology: hydroxyapatite analysis refines cremation studies, while the site's mudflow preservation rivals the Villa of the Papyri. Socially, it reveals demographics (diverse freedmen, slaves, elites) and resilience, with 2021 studies showing no widespread malnutrition.