The Amalfi Coast rises almost directly from the sea. Between the waterline and the ridgeline above Ravello there is very little flat ground — a strip of beach, a narrow road, and then limestone cliffs that gain 1,400 metres of altitude within two kilometres. The terraces cut into these cliffs are not a recent adaptation. Archaeological evidence of terrace agriculture along this stretch of Campanian coastline dates to the early medieval period, and some walls show characteristics consistent with Roman construction.
The landscape before modern agriculture
Before the expansion of lemon cultivation in the 16th and 17th centuries, the Amalfi terraces held a mixed-crop system: wheat on the wider lower terraces, olives on the mid-slope, and vines on the steeper upper sections where the soil was thinnest and the drainage most complete. This vertical distribution was not arbitrary. Each zone matched a crop to the conditions where it performed best.
The introduction of the sfusato amalfitano lemon, a locally developed cultivar unusually large and thick-skinned, reorganised the terrace system. Lemon groves moved upward through the olive zones during the period of peak production in the 18th and early 19th centuries, when Amalfi Coast lemons were exported across Europe for both culinary and medicinal use. The terraces were widened, retaining walls rebuilt to accommodate irrigation channels, and the characteristic pergolati — overhead structures of chestnut poles and wire — were constructed to shade the fruit from the harshest summer sun.
Pergolati: the overhead frame system
The pergolato is specific to the Amalfi Coast lemon grove. Unlike the open terraces of the Cinque Terre, where vines are trained low and the sky is unobstructed, the Amalfi terrace is often covered by a horizontal framework of poles and wire over which nets or dried fern fronds were traditionally laid to filter sunlight. The sfusato lemon performs better under filtered light: the skin develops its characteristic fragrance and the fruit retains moisture through the dry summer months.
Building and maintaining a pergolato is distinct from maintaining the terrace wall itself. The poles require replacement every seven to fifteen years depending on the material and exposure. The wire framework must be tensioned correctly to prevent sagging under the weight of fruit. Many growers who maintained both the walls and the pergolati over previous generations no longer have successors with this specific knowledge.
Water management on the Amalfi slope
Rainfall on the Amalfi Coast is concentrated between October and March and largely absent from June through September. Irrigation was therefore a central agricultural problem. The solution developed over centuries was a network of cisterns — locally called cisternine — cut into the hillside behind each terrace or integrated into the retaining wall itself. These collected winter rainfall and were drawn from during the dry summer months.
The cisternine system was gravity-fed where the topography allowed. Water moved along narrow channels cut into the wall face, distributed to individual lemon trees through small clay pipes buried in the terrace soil. Some of these distribution networks remain partially functional on working terraces today, though most growers now supplement with electric pumps drawing from municipal water.
What "abandoned" looks like here
The Amalfi Coast UNESCO inscription in 1997 covers approximately 11,230 hectares of coastline. Within this area, the combination of steep terrain, difficulty of mechanisation, and declining agricultural returns has produced a characteristic pattern of partial abandonment: the lower, more accessible terraces remain in use, while the upper sections — narrower, harder to reach, more expensive to maintain — have been left since the 1970s in most villages.
Abandoned terraces on limestone hillsides undergo a specific sequence. Without cultivation, woody shrubs — primarily Pistacia lentiscus and Euphorbia species — establish within two to three years. Their root systems are shallow but fibrous, and they have limited ability to stabilise the loose fill behind the terrace walls. After ten to fifteen years, the walls begin to show bulging and displacement. The risk then is not just slow collapse but rapid failure during heavy rainfall events, which have caused landslides affecting villages below several times in recent decades.
Active farming practices in 2024
The farms that remain in active operation along the Amalfi Coast in 2024 are concentrated in the areas with the most accessible terrain: the lower slopes above Amalfi, Minori, and Maiori, and the valley floors around Tramonti. The Tramonti area, inland and less exposed to tourist pressure, has maintained a functioning mixed-agriculture system including vines, walnuts, and market vegetables. It retains a higher density of working terrace walls than the coastal strip.
The sfusato amalfitano lemon retains a geographical indication (IGP designation as Limone Costa d'Amalfi) that provides some commercial incentive to maintain the terrace groves. Certified production figures for 2022 stood at approximately 1,400 tonnes, from around 160 registered producers, according to the Consorzio di Tutela del Limone Costa d'Amalfi.
Stone construction on limestone: a different challenge
The retaining walls of the Amalfi Coast are built primarily from limestone rather than the schist and sandstone of the Ligurian coast. Limestone splits differently from schist — it tends to produce thicker, heavier blocks rather than flat plates — and this affects wall construction technique. Amalfi walls are generally wider at the base and use larger individual stones than Cinque Terre walls of comparable height.
The stability mechanism is similar: a battered face, through-stones at intervals, and a loose fill of smaller stone behind the face. But the limestone fill drains less uniformly than schist fill, and the larger facing blocks are more disruptive when they eventually dislodge. Repairs to limestone terrace walls on steep gradients require lifting equipment or careful hand placement, and the cost per metre is typically higher than on the Ligurian coast.
External references: UNESCO Amalfi Coast listing · Consorzio di Tutela del Limone Costa d'Amalfi
