Westgate - Cabernet Franc The Curtis Vineyard was selected for this Santa Ynez Valley Cabernet Franc. This Vineyard’s soils are composed of a complex array of Chamise shaley loam, Linne clay loam and Arnold sand - With interspersed rocky soils and shale resulting in low yielding vines. All of which spreads out over the dramatic landscape of rolling hills, oak trees, valleys, and aligned with perfect exposure to the sun.