2 minutes read Portugal Sightings 1990: Alfena, Portugal UFO Mystery – Article Published: April 5, 2015 | Updated: January 13, 2026 0 Alfena, Portugal – 09-10-1990 This event remains as one of Europe’s unsolved UFO cases. It began at about 8:30 AM, September 10, 1990, when... Read the File Read more about 1990: Alfena, Portugal UFO Mystery – Article
