What is hardenberg?

Hardenberg can refer to several different things, including:

1. Hardenberg, Germany - a town in Lower Saxony, Germany with a population of around 12,000 people.

2. Hardenberg-Wilthen AG - a German company that produces alcoholic beverages such as vodka and whiskey.

3. Bettina von Hardenberg - a German entrepreneur who founded the start-up company "Lemonaid".

Without further context, it's difficult to know exactly what information about Hardenberg is being requested.