Herculaneum: Pompeii's Better-Preserved Neighbor

Herculaneum (Ercolano in Italian), located at the base of Mount Vesuvius on the Bay of Naples, was a wealthy Roman resort town that was destroyed alongside Pompeii by the eruption of Vesuvius on August 24, 79 CE. While Pompeii was buried under 4 to 6 meters of pumice and ash, Herculaneum was engulfed by pyroclastic surges and flows that deposited up to 20 meters of volcanic material, superheating and carbonizing organic materials before sealing them in an airless environment.

Introduction

This deeper, hotter burial paradoxically resulted in better preservation than at Pompeii. Wooden structures, furniture, food, textiles, and even a library of papyrus scrolls survived in carbonized form — providing an unparalleled record of Roman domestic life. The site was designated a UNESCO World Heritage Site in 1997 as part of the "Archaeological Areas of Pompeii, Herculaneum and Torre Annunziata."

Geographic Setting

• Location: Ercolano, Campania, southern Italy
• Elevation: Approximately sea level (now below modern town)
• Distance to Vesuvius: 7 km west of the crater
• Climate: Mediterranean, 1,000mm annual rainfall

Herculaneum was situated directly on the Bay of Naples, closer to Vesuvius than Pompeii and on the volcano's western flank. The ancient shoreline, where hundreds of victims were found huddled in waterfront boat houses, is now about 500 meters inland due to the massive volcanic deposits that extended the coastline seaward. The excavated ruins sit in a deep excavation trench, 20 meters below the modern town of Ercolano.

The proximity to Vesuvius meant that Herculaneum was struck not by falling pumice (which buried Pompeii) but by pyroclastic surges — superheated clouds of gas and volcanic debris traveling at over 100 km/h. The first surge hit around 1:00 AM on August 25, killing the inhabitants instantly with temperatures exceeding 400°C, then burying them under successive flows of volcanic mud that hardened into rock-like tufa.

Architecture & Engineering

• Excavated Area: About 4.5 of estimated 20 hectares
• Villa of the Papyri: Luxury villa with scroll library
• Suburban Baths: Complete Roman bathhouse
• Preservation: Wood, food, textiles, and organic remains intact

Herculaneum was a smaller, wealthier town than Pompeii, with elegant multi-story houses featuring wooden balconies, latticework screens, and second-floor apartments still visible. The carbonization process preserved wooden beams, doors, beds, and furniture that have completely disappeared at most Roman sites. Food including bread, figs, eggs, and even a bowl of lentil soup has been found preserved.

The Villa of the Papyri, a luxury seaside mansion believed to have belonged to Julius Caesar's father-in-law, contained a library of approximately 1,800 carbonized papyrus scrolls — the only intact library to survive from the ancient world. Recent advances in X-ray scanning and artificial intelligence are beginning to read these scrolls without unrolling them, potentially revealing lost works of ancient philosophy and literature.

Historical Significance

• Destroyed: August 24–25, 79 CE
• Discovery: 1709, during well-digging
• Scrolls: ~1,800 carbonized papyrus scrolls
• UNESCO Status: World Heritage Site since 1997

Herculaneum was accidentally discovered in 1709 when workers digging a well struck the theater's marble seats. The Bourbon kings of Naples sponsored tunneling excavations in the 18th century, removing statues and mosaics through underground shafts. Open-air excavation began in the 20th century, but progress is slow because the modern town of Ercolano sits directly above most of the ancient city.

The discovery of over 300 skeletons in the waterfront boat houses in the 1980s overturned the previous belief that Herculaneum's population had successfully evacuated. These victims, frozen in their final postures by the extreme heat, provide invaluable information about Roman health, diet, and daily life. DNA analysis and isotopic studies of the bones continue to yield new insights.

Conservation & Tourism

• Annual Visitors: ~500,000
• Threats: Groundwater, modern buildings above, moisture
• Excavation Challenge: Modern town sits above 75% of the site
• Access: Circumvesuviana train from Naples

Herculaneum's conservation challenges are daunting. Groundwater seeps into the excavation trench from all sides, damaging frescoes and wooden remains. The modern buildings of Ercolano tower above the excavation on three sides, preventing expansion. Only about 4.5 of an estimated 20 hectares have been excavated, and expanding the dig would require demolishing modern housing.

The Herculaneum Conservation Project, a public-private partnership, has developed innovative techniques for stabilizing waterlogged structures, conserving carbonized wood, and managing moisture. Despite receiving fewer visitors than Pompeii, Herculaneum offers a more intimate and in some ways more remarkable experience — the multi-story buildings, preserved wood, and visible food remains bring Roman daily life to life in a way no other site can match.

Key Facts

• Herculaneum was buried under 20 meters of volcanic material from Vesuvius in 79 CE.
• Carbonized wooden structures, furniture, and food are preserved — unique among Roman sites.
• The Villa of the Papyri contained about 1,800 carbonized scrolls, the only ancient library ever found intact.
• Only about 4.5 of an estimated 20 hectares have been excavated.
• Over 300 skeletons were found in waterfront boat houses in the 1980s.

Fun Facts

• AI is now being used to read carbonized scrolls from the Villa of the Papyri without unrolling them.
• Pyroclastic surges hit Herculaneum at temperatures exceeding 400°C, killing victims instantly.
• A loaf of bread found at Herculaneum, carbonized but intact, still shows the baker's stamp and scoring pattern.

Final Thoughts

Herculaneum offers something even Pompeii cannot — the preservation of organic materials that reveal the texture of Roman daily life in extraordinary detail. Its carbonized scrolls, wooden buildings, and preserved food represent an archaeological resource of incalculable value, still largely buried beneath the modern Italian town above.