From Stamps of the World
Zuidhorn is a municipality and a town in the northeastern Netherlands. Due to a municipal reoganisation in 1990, Zuidhorn was extended when it merged with, though not physically connected to Oldehove, Grijpskerk and Aduard. The town largely depends on the city of Groningen. A railway line, operated by Arriva, connects the town with Leeuwarden in Friesland and Groningen.
Read more @ https://en.wikipedia.org/wiki/Zuidhorn