in the boondocks
In a very distant or remote location, often one that lacks modern amenities. That place is all the way out in the boondocks—it'll take us hours to get there. Good luck getting a cell signal out here in the boondocks.
*in the boondocks
and *in the booniesin a rural area; far away from a city or population. (*Typically: be ~; camp ~; live ~; stay ~.) Perry lives out in the boonies with his parents.