Banna - Credit: Wikimedia Commons
Birdoswald Roman FortBirdoswald Project https://birdoswaldproject.com/history/ was known as Banna ("peak, horn" in Celtic) in Roman times, reflecting the geography of the site on a triangular spur of land bounded by cliffs to the south and east commanding a broad meander of the River Irthing in Cumbria below. Read more on Wikipedia
Source: en.wikipedia.org