A way teachers turned up in permanently frozen area (6)
I believe the answer is:
tundra
'permanently frozen area' is the definition.
'tundra' can be an answer for 'area' (I have seen 'Area of permafrost' mean 'tundra' so perhaps 'area' could also mean 'tundra'). I'm not certain of the 'permanently frozen' bit.
'a way teachers turned up' is the wordplay.
'way' becomes 'rd' (short for road).
'teachers' becomes 'nut' (National Union of Teachers).
'turned up' shows that the letters should be reversed in order.
'a'+'rd'+'nut'='ardnut'
'ardnut' back-to-front is 'TUNDRA'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for tundra that I've seen before include "Vast area" , "Arctic plain with permafrost" , "Arctic region of permafrost" , "Treeless Arctic region" , "wasteland" .)