Yamhill-Carlton AVA, Established 2004. "Yamhill-Carlton is a south-facing horseshoe shaped bowl containing a series of eroded hills east of the higher-elevation Coast Range. Surrounding elevations provide a wind and rain shield that protects vines at critical times during the growing season. Marine sedimentary silt-loam soils are unique to the Yamhill-Carlton AVA. The soils are well drained which promotes earlier cessation of vegetative growth and more complete ripening and tannin development at lower levels of acidity." https://yamhillcarlton.org/about/