1) Boondocks 2) Boonies 3) Hinterland 4) Inaccessible 5) Limit 6) Outback 7) Unaccessible 8) Wilds 1) Hinterland 2) Hinterlands 3) Inaccessible 4) Outback 5) Remote 6) Remote area 7) Support drivers 8) Unaccessible 
Backwoods generally refers to a woodland or forest. It can also refer to: ...
• (n. pl.) The forests or partly cleared grounds on the frontiers.
Back'woods' noun plural [ Back , adjective + woods .] The forests or partly cleared grounds on the frontiers. 
[n] - a remote and undeveloped area
back country noun a remote and undeveloped area