As high as a man can get, climbing in Scotland (4)
I believe the answer is:
alto
'as high as a man can' is the definition.
I can't tell whether this definition defines the answer.
'climbing in scotland' is the wordplay.
'climbing' is a reversal indicator (in a down clue, letters climb up).
'in' says the answer is hidden in the clue.
'otla' is hidden within 'scotland'.
'otla' backwards is 'ALTO'.
'get' is the link.
Can you help me to learn more?
(Other definitions for alto that I've seen before include "Low female singing voice" , "The highest adult male singing-voice" , "Highest male voice: lowest female voice" , "Voice part" , "Woman's singing voice" .)