Arctic explorer who’s lost in ice formation (4)
I believe the answer is:
berg
'ice formation' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for berg that I've seen before include "ice in the drink" , "Viennese composer" , "African mount" , "Lump of ice" , "South African mountain - Austrian composer" .)