The most common and most likely answer to this crossword clue is the 10 plus 1 letter word TROSSACHS} –
T
R
O
S
S
A
C
H
S
}
â
€
“
Buddy explains!
The straight part
We know that "area of Scotland" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case area of scotland = trossachs} –.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.