Remote spot: D for the cruciverbalist? (3,4,2,6)
I believe the answer is:
the back of beyond
'remote spot' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for the back of beyond that I've seen before include "Finding this remote area might need a plan" , "ND" , "A really remote area" , "most remote spot?" , "Extremely remote place" .)