Scotland (9)
'scotland' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for caledonia that I've seen before include "Lat. name for N. Britain" , "forgotten British region" , "north of the border once" , "Latin name for northern Britain" , "Old poetic name for Scotland" .)
(Other definitions for yard that I've seen before include "Earth" , "American garden" , "Thirty six inches" , "Police" , "Three feet; enclosure" .)