The most common and most likely answer to this crossword clue is the 11 letter word KILIMANJARO
I've seen this crossword clue in The Daily Telegraph
K
I
L
I
M
A
N
J
A
R
O
More clues leading to the result KILIMANJARO
- I hand over beer in metric weight for African challenger?
- High Mass forged a major link with Islam at first
- Brief dispatch by independent fellow before clash on old mountain
- Great height and weight filled out by one chap with beer?
- Peak weight restricting single bloke having drink
- Relatives around Peruvian city drink by old mountain
Buddy explains!
The straight part
We know that "mountain" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case mountain = kilimanjaro.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.