back country
From Longman Dictionary of Contemporary Englishback countryˈback ˌcountry noun [uncountable] 1 COUNTRYSIDE especially AusE a country area where few people live2 American EnglishCOUNTRYSIDE an area, especially in the mountains, away from roads and townsExamples from the Corpusback country• Thirteen remain in the Santa Barbara County back country.• When Taylor asked some of the boys at Midvale to join him in the back country, all but William Fannon refused.