Crossword Genius

Winter landscape feature melting down first? (9)

Ross

I believe the answer is:

'winter landscape feature' is the definition.

'melting down first?' is the wordplay.
'melting' indicates an anagram.
'down'+'first'='downfirst'
'downfirst' with letters rearranged gives 'SNOWDRIFT'.

(Other definitions for snowdrift that I've seen before include "Wintry accumulation", "Wind-driven winter hazard", "Midwinter may show one", "Wintry feature", "Winter problem".)

I've seen this clue in The Times.