the back of beyond
• a very remote or inaccessible place.
Similar:
the middle of nowhere,
the backwoods,
the wilds,
the hinterland,
a backwater,
the back country,
the backblocks,
the booay,
the backveld,
the platteland,
the boondocks,
the boonies,
the tall timbers,
Woop Woop,
beyond the black stump,
