Also known as the Northernmost Frumplin, Urk is a frigid dot of tundra inhabited by ruthless pygmy shrews nearest to the field of iceburgs. It is one of a very few places in proximity to Vulpinsula which has not been conquered.
There is no trading between the Imperium and Urk. Leave it alone. If you find yourself on Urk, the best suggestion is to get off, and quickly before you're gobbled up by shrews.