Les Hauts Lieux is located on the estate's highest and most sheltered parcels, in the Mont Redon lieu-dit, in the northern part of the Châteauneuf-du-Pape appellation. This north-facing exposure creates a naturally cooler microclimate, where the grapes ripen later than on the estate's other parcels. The terroir rests on a complex mosaic of limestone and quartz, with shallow marly-limestone soils covered with quartzite pebbles. This geological structure is particularly suited to Mourvèdre, a late-ripening variety that benefits from the site's freshness. The vines, averaging 70 years of age, drive their roots deep into these poor soils, gaining in mineral concentration and depth.

Jean-Paul Daumen has managed Domaine de la Vieille Julienne using Demeter-certified biodynamic farming since 1998, with meticulous soil work and complantation respecting the appellation's traditional grape varieties. The harvest is carried out entirely by hand, with a first selection in the vineyard and a second at the cellar when the grapes arrive in small crates. The grapes are completely destemmed. Vinification remains traditional: natural fermentation in concrete vats without any additions, using indigenous yeasts present in the bloom of the berries, which reveal the singularity of the terroir and the expression of the vintage. Following a 20-day maceration, the wine is aged in foudres for 12 months, then bottled without fining or filtration.