Western Oregon is essentially old seafloor as a base, with various volcanic events - basalt and andesite rock - windblown loess, and then more recent glacial flood deposits of high nutrient soils in the lowest lands of the Willamette Valley. I think the Gorge is really interesting though windy, and south slopes are at a premium. The Hood River flows north, for example. But the Gorge is warm without the heat of Walla Walla, and it typically finishes the season dry, or at least more like CA than through the Gorge here in the Willamette Valley. I think if I make wine from outside the Willamette Valley, it would be from the Gorge.