Mount of berries (5)
I believe the answer is:
logan
'mount of berries' is the definition.
The definition and answer can be both natural objects as well as being singular nouns.
Maybe you can see an association between them that I don't see?
This is all the clue.
Can you help me to learn more?
(Other definitions for logan that I've seen before include "Mount ..... is the highest peak in Canada" , "Rocking-stone" , "(Grower of) berry" , "Rocking stone" .)