The most common and most likely answer to this crossword clue is the 12 letter word MOUNTAINSIDE
I've seen this crossword clue in The Daily Telegraph
M
O
U
N
T
A
I
N
S
I
D
E
Buddy explains!
The straight part
We know that "where snow and ice may be evident" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where snow and ice may be evident = mountainside.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MOUNTAINSIDE mean?
MOUNTAINSIDE noun- The sloping side of a mountain.