Long narrow range in torrid geographical zone (5)
I believe the answer is:
ridge
'long narrow range' is the definition.
'ridge' can be an answer for 'range' (I have seen 'Range of hills ' mean 'ridge' so perhaps 'range' could also mean 'ridge'). I'm not sure about the 'long narrow' bit.
'in torrid geographical zone' is the wordplay.
'in' indicates a hidden word.
'RIDGE' is hidden within 'torrid geographical zone'.
Can you help me to learn more?
(Other definitions for ridge that I've seen before include "back of whale" , "Backbone of a whale" , "Elongated area of high pressure" , "Feature of mountain" , "Raised strip of land" .)