The most common and most likely answer to this crossword clue is the 4 letter word GLEN
G
L
E
N
More clues leading to the result GLEN
- Fellow colonel gasps, lifting exhibits
- Information about lake and valley
- Dope accepts pound in depressed Scottish area
- Dope getting left in depression
- Dope getting left in valley
- A Campbell … and where he might live
- Leading Grampian location, especially Nevis!
- Vale! Leaving disheartened, having failed
- Dope cut with large narrow hollow
- Good little man in depression in Scotland
Buddy explains!

The straight part
We know that "valley" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case valley = glen.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 GLEN mean?
GLEN noun- A secluded and narrow valley, especially one with a river running through it; a dale; a depression between hills.