No classification exists. We built one from the rock.
1,344 vineyard sites across 8 appellations, scored against 43,432 geological formations at 5-metre resolution. The first systematic terroir intelligence for a region no one has ranked. Same Hercynian granite as Hermitage — a tenth of the price. Now it's an API.
27.9° slope. Measured at 5-metre resolution. The gradient where pulley systems replace tractors.
WHAT THE DATA REVEALS
The Rhône has no classification. We built one.
Burgundy ranks vineyards. Champagne rates villages. The Northern Rhône has nothing — just steep granite slopes and reputation. We intersected 1,344 vineyard sites against 43,432 geological formations and 5-metre elevation data across four départements.
Hermitage is only 15% granite
Common wisdom says Hermitage is a granite hill. The spatial data says otherwise. Granite concentrates on the western flank. The east is clay-chalk, loess, glacial debris. The engine shows exactly where.
5-metre resolution
Satellite elevation data smooths away the terraces entirely. IGN's 5m DEM reveals slopes 50-65% steeper than 90m data reports. La Landonne: 27.9°. Côte Brune: 26.4°. The gradients where pulley systems replace tractors.
Geology crosses borders
The granite under Hermitage continues into Crozes-Hermitage's northwest zone. The schist under Côte-Rôtie runs into Saint-Joseph's historic core. Same bedrock, different appellation, a fraction of the price.
Palaeozoic bedrock
Burgundy maps Jurassic limestone. Champagne maps Cretaceous chalk. The Rhône sits on crystalline basement rock — granite, mica-schist, gneiss — hundreds of millions of years older. Three geological eras, one pipeline.
1,344
LIEUX-DITS SCORED
3,200
GEOLOGY RECORDS
43,432
FORMATIONS
5m
DEM RESOLUTION
Powers terroir intelligence inside Claude by Anthropic
THE DISCOVERY
Same rock. Different appellation.
The geology doesn't stop at appellation borders. The spatial intersection proves where prestige formations continue into cheaper zones — measured, not asserted.
HERMITAGE · LES BESSARDS
Jean-Louis Chave Hermitage
Western flank granite, 20.0° SW-facing, 170m
S$500
CROZES-HERMITAGE · GERVANS
Alain Graillot Crozes-Hermitage
Same granite continues into NW appendice
S$50
CÔTE-RÔTIE · LA LANDONNE
E. Guigal La Landonne
Mica-schist, iron-rich, 27.9° SE, 230m
S$800
SAINT-JOSEPH · TOURNON
Pierre Gonon Saint-Joseph
Historic core — same bedrock, the river between
S$80
CORNAS · REYNARD
Auguste Clape Cornas
Granite, 25.6° SE-facing, 267m
S$250
CORNAS · CHAILLOT
Franck Balthazar Cornas Chaillot
Granite amphitheatre, Verset's old vines
S$90
Same formation code. Same measured geology. Different label. Different price.
PRICING
One API. Three regions.
A single key covers Burgundy, Champagne, and the Northern Rhône. Never charged separately per region.