The vineyards
The vines stand high in the Valle de Uco, on the western side of the valley, with the Andes behind the last row. Pinot Noir, Merlot, and Cabernet Sauvignon each keep a part of the slope.
Gravel
Under the vines the ground is Andean gravel: rounded stones, coarse sand, and clay deeper in the profile. Irrigation water sinks through the stones instead of sitting on the surface.
Snowmelt canals
Snowmelt from the cordillera feeds open canals along the rows. A block is watered when the gravel has dried. Between irrigations the ditch runs low.
The umbra hour
In the late afternoon the mountain shadow reaches the rows. The leaves are out of the direct sun, and the stones are still warm. The house takes its name from that hour.