Exclave
Some territories are not geographically detached from their motherland. Nevertheless, they are more easily reached by entering a foreign country. Very often, this is because of their location in a hilly area. It may also be because the only road enters that foreign place before coming back to the mother country.  These territories may be called "practical exclaves," "pene-exclaves" or "quasi-exclaves" and can be found along many borders, particularly those that are not heavily defended. They will only be attached to the motherland via an extremely small or thin slice of land.