The Okanagan Valley is over 100 miles long, running essentially north to south, at a height of around 300 metres above sea level, with a series of glacier-fed lakes along the valley floor. Whilst daytime temperatures here can top 40 degrees C, the nights are cool enough to refresh the vines and avoid them shutting down whilst maintaining good acidity levels, and generally the region is warmer – and drier – than Napa, nearly a thousand miles further south. Three mountain ranges surround the valley, influencing both the weather conditions on a daily basis and, more importantly, the soils, which were created by the retreating glaciers and subsequent alluvial deposits.