The map of the Barolo MGAs
This map shows, over satellite imagery, all 170 Menzioni Geografiche Aggiuntive (MGAs, “additional geographical mentions”) of Barolo: the “crus” recognised by the production rules in 2010, covering 5,192 hectares across 11 communes.
An MGA states on the label where the grapes come from, for example Barolo Cannubi or Barolo Bussia . Besides the 170 MGAs mapped here, the rules also recognise the eleven communes of the area as mentions, 181 in total: a label may read, for instance, «Barolo del comune di Serralunga d’Alba».
MGAs are not a quality ranking: no mention is “superior” to another, unlike the Grand Crus and Premiers Crus of Burgundy. That is why the map does not colour them by rank but by commune, with a different colour for each MGA, by elevation or by sun.
How to read it
Commune : each MGA takes the colour of the commune where most of it lies. In the legend, a click hides or shows a commune; Alt-click isolates it.MGA : each MGA gets a colour different from its neighbours, so its shape and size stand out at once.Elevation : elevation point by point, from the blue of the valley floors to the red of the ridges. As with the sun, the colours ignore the MGA boundaries, which remain only as outlines, so you can see differences in height within a single MGA. Hover to read the elevation at that spot.Sun : potential solar radiation between April and October, point by point on a grid of about 14 metres, from the blue of the coolest slopes to the red of the sunniest. The colours ignore the boundaries, revealing differences within the same MGA. Hover to read the value at that spot.
Each MGA card also shows the aspect and slope of its hillsides, with a full aspect rose, the sun and the land use.
Clicking a point on the map gives the exact elevation, aspect and sun at that spot and, from the Regione Piemonte services, the cadastral sheet and parcel, the declared crop and the appellations the vineyard is registered for. The Cadastre button shows the land registry parcels inside the MGAs, with sheet, number, area and declared crop; each MGA card includes its cadastral subdivision. The 3D button tilts the map over the relief.
The largest MGAs Bricco San Pietro 380 ha , Bussia 297 ha , Perno 205 ha , Ravera 132 ha , Castelletto 129 ha , Ginestra 114 ha , Annunziata 112 ha , Corini - Pallaretta 107 ha .
The highest and the lowest Highest: Serradenari 494 m , Coste di Vergne 438 m , Le Coste di Monforte 427 m , La Serra 422 m , Bricco delle Viole 419 m . Lowest: Bricco Manzoni 218 m , Ciocchini 219 m , Bricco Ambrogio 220 m .
How much is really vineyard The MGA boundaries do not contain only vines. According to the 2025 farm register of Regione Piemonte, in the 170 Barolo MGAs vineyard parcels cover 3,317 hectares out of 5,192 (64%), hazelnut parcels 388 hectares. Parcels eligible for Barolo DOCG total 2,698 hectares.
Most planted to vines Altenasso 99% , Zuncai 98% , Vignarionda 98% , Le Turne 98% , Bricco Rocca 97% , Marenca 97% , Castello 97% , Margheria 96% , Case Nere 96% , Cerequio 96% .
Least planted to vines San Giacomo 19% , Bricco Cogni 24% , Ciocchini 26% , Ascheri 32% , Breri 33% , Sant’Anna 37% .
Most hazelnut Ascheri 28 ha , Breri 26 ha , San Giacomo 23 ha , Serradenari 22 ha , Brandini 19 ha , Massara 18 ha .
The sun Potential solar radiation measures the energy reaching the slopes between April and October under clear skies, taking into account slope, aspect and the shadows of the surrounding hills. It compares MGAs more precisely than aspect alone.
The sunniest Castello 1,531 kWh/m² , Garretti 1,517 kWh/m² , Parafada 1,513 kWh/m² , Arione 1,509 kWh/m² , Rocche dell’Annunziata 1,507 kWh/m² , Coste di Vergne 1,506 kWh/m² , Brunate 1,501 kWh/m² , Case Nere 1,499 kWh/m² .
The coolest San Lorenzo 1,283 kWh/m² , Gianetto 1,309 kWh/m² , Drucà 1,323 kWh/m² , Valentino 1,328 kWh/m² , Capalot 1,330 kWh/m² , Teodoro 1,331 kWh/m² .
Single vineyards inside the MGAs Besides the MGA, a label may name a single vineyard with the word «Vigna», for example Barolo Bussia Vigna (Bricco) Visette . Regione Piemonte keeps the official register of these mentions with their cadastral references: the 68 Barolo vineyards in the 2025 register are drawn inside the MGAs with a dashed outline. Click one to open its card with area, elevation, aspect, sun and cadastral parcels; each MGA card lists the vineyards registered within it.
Sources and accuracy
The MGA boundaries were digitised from the official Barolo map of the Consorzio di Tutela Barolo Barbaresco Alba Langhe e Dogliani, drawn by Alessandro Masnaghetti, and georeferenced on the buildings of the base map: the average offset is a few metres, but along the boundaries it can reach about ten. Areas, elevations and aspects are computed on these polygons and are indicative. For labelling, the production rules (disciplinare) and the vineyard register are authoritative.
AGEA 2024 orthophotos from Regione Piemonte and Esri World Imagery. Terrain from Mapzen Terrarium. Cadastre, 2022 and 2025 agricultural land use, 2025 appellation eligibility and the 2025 register of «Vigna» mentions from the Regione Piemonte Geoportal (CC BY 4.0). Land registry parcels © Agenzia delle Entrate (INSPIRE WFS service, CC BY 4.0). Solar radiation computed on the terrain model. Commune boundaries © OpenStreetMap (ODbL).
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Other maps: the MGAs of Barbaresco · the climats of the Côte d’Or .
Rights
© 2026 Valerio Barbato. The code, design, texts and data processing of this map are the author’s work and are protected by copyright (Italian law 633/1941). Reproduction, even partial, without written permission is prohibited. The source data remain available under the terms of their respective licences listed above.