bogu iza leđa

1. colloq. in the middle of nowhere; in the back of beyond
   Kupili su kuću bogu iza leđa. — They bought a house in the middle of nowhere.
   To selo je bogu iza leđa, nema ni autobusa. — That village is in the back of beyond, there isn't even a bus.

Written with lowercase b: bogu iza leđa (capitalized only at the beginning of a sentence). Usually carries a negative tone: the place is inconveniently remote and cut off from everything.