This Great Southern sub-region lies just east of Mt Barker, Western Australia. The climate is Mediterranean, and the high elevation of the area produces distinctive wine character. In recent years, Porongurup has developed a reputation for delicate Riesling resulting from the unique terroir of the region.
The Porongurup Range rises to 670m with vineyards located at an elevation of between 250 metres and 400 metres. This distinctive geomorphic granite range has a variety of soil types often named after the dominant eucalypt species, with the most fertile being the karri loams and material derived from the weathered granite.
A feature of the climate is a night-time thermal zone, created by a layer of warm air, which rises above the denser cold air sliding down the projecting hillsides of the sub-region and settling on the lower valley floor. The excellent air drainage diminishes the risk of frosts.