Dueknipen is a street name in the city Kristiansand in south Norway.
Dueknipen translated from norwegian to english is, pigeon catcher, roughly.
Due = Pigeon. Knipen = Catcher.

It lays up on a mountain top beside the city,
presumably this place was once used to catch pigeons with letters \ packages.
This was how communication worked, before internet was invented in 1983.