Mountadam's vineyards are situated within the High Eden sub-region of the Barossa Valley zone.

The High Eden region forms a triangular corner piece to the Barossa Ranges, running from Truro in the north, just behind Angaston, down the range to the east of Williamstown, and looping around Springton before heading north in a line back to Truro. It delivers wines in a different flavour spectrum to those from the valley floor, generally more elegant and restrained.

It is unique among Australia's winegrowing areas not only for its attributes of cool climate and high altitude, but for its magnificent landscape. It is largely unspoilt land with a sparse population and with no major settlement.

Many regard it as Australia's most picturesque winegrowing area, with sweeping vistas overlooking graceful contoured vineyards on misty hillsides dotted with massive red gums and stands of yacca trees. There are meandering creeks among massive rock outcrops, some of which display ancient Aboriginal art. It is home to majestic wedge-tail eagles and minute superb blue wrens, and retains a serenity unmatched by neighbouring winegrowing areas.
and rock fragments are present in both the surface and subsurface.

Climate and soil

From a winegrowing perspective, growing season temperatures are significantly lower than those of the Barossa Valley, and the final stages of ripening and harvesting take place in much cooler conditions. The longer growing season, undulating terrain and rocky soils deliver distinctive varietal wines with high natural acidity.

Topography is varied. Rolling, exposed hills with moderately steep gradients are commonplace. There are a number of soil types, most commonly ranging from grey to brown in colour and from loamy sand to clay loams, with subsoils deriving from weathered rock. Soils are deeper in the valleys; towards the ridges they become shallow, well-drained and rocky. Ironstone gravels, quartz gravels and rock fragments are present in both the surface and subsurface.