Wallis Lake and hinterland

I have used the term for many years. In Australia it generally means the countryside/ hills inland behind the coast. Wikipedia says this... Hinterland is a German word meaning "the land behind" (a city, a port, or similar). The term's use in English was first documented by geographer George Chisholm in his Handbook of Commercial Geography (1888). Originally the term was associated with the area of a port where materials for export and import are stored and shipped, subsequently the use of the word expanded to include any area under the influence of a particular human settlement.