From Longman Dictionary of Contemporary Englishthe back of beyondthe back of beyondFAR informal a place that is a long way from other places and is difficult to get to It’s a nice little cottage but it really is in the back of beyond. → back
Examples from the Corpus
the back of beyond• His early comedies might have been taken to represent an unheard-of civility from the back of beyond.• Whatever anyone says about muggings and suchlike up here, there'd be no one about at all in the back of beyond.• Larky jaunts to the back of beyond returned to fashion with the 1980s boom in travel writing. 