Horned mammal seen to the south of one cold country (7)
I believe the answer is:
iceland
'cold country' is the definition.
(I've seen this before)
'horned mammal seen to the south of one' is the wordplay.
I cannot quite understand how this works, but
'mammal' could be 'eland' (eland is a type of antelope) and 'eland' is present in the answer.
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
A single letter 'c' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for iceland that I've seen before include "Northern country" , "North Atlantic country" , "North Atlantic island republic" , "Former Danish colony" , "Home to the volcano Eyjafjallajokull" .)