This is the 4966th most frequent German word.
altenberg
"Altenberg" is a German word meaning "old mountain."
In this sentence, 'Altenberg' is used as a proper noun, referring to a specific place, presumably a town or city.
Ich besuchte Altenberg letzte Woche.
I visited Altenberg last week.
Here, 'Altenberg' functions as a geographical term, likely a mountain or highland, characterized by its natural features.
Der Altenberg ist bekannt für seine Wanderwege.
The Altenberg is known for its hiking trails.
The word 'alten' translates as 'old,' and 'Berg' relates to a mine or mountain. Together, 'alten Bergwerk' represents an old mine, and this use is different as it employs the adjective form.