Explore details about location Knappa Terrace Lane. Knappa Terrace Lane is a location situated within the Clatsop County alongside other areas such as Strum Creek Road, Fort Clatsop Road, Mc Croskey Road. Additionally, some smaller parts of Knappa Terrace Lane include specific areas like Carl Johnson Lane, Old US Highway 30, Ziak Gnat Creek Lane adding to the diversity of its landscape.