Medic tucked into fish in wasteland (6)

I believe the answer is:

tundra

(Other definitions for tundra that I've seen before include "Area of permanently frozen subsoil" , "Northern permafrost region" , "Vast level Arctic region with frozen subsoil" , "Artic treeless plain" , "Vast treeless plane" .)

I've seen this clue in The Sun.

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