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There is no mountain range that forms the backbone of the UK but the Pennines are the backbone of England.
the backbone of hills and mountains are the rocks
The mountain range forming the backbone of the United Kingdom is the Pennines.
Another name for devils backbone is Backbone Mountain.
The backbone of Italy is made of mountain ranges. The mountain ranges are called the Italian Appennino or the Apennine Range or just the Apennines.