Under der Gassa is a location situated within the country of Liechtenstein. As there is no specific source material provided regarding its unique landmarks or history, it is identified primarily by its geographic placement within this small European principality.
The area serves as part of the local landscape of Liechtenstein, a nation known for its mountainous terrain and alpine scenery. Specific details regarding the town's population, infrastructure, or cultural significance are not available in the provided documentation.