Meaning
This flag stands for South Georgia and the South Sandwich Islands, remote, glacier-covered islands in the far South Atlantic with no permanent residents, only research and support staff.
It mostly appears in wildlife documentaries, expedition cruise posts and polar exploration stories, especially about vast king penguin colonies and elephant seals, with 🐧 or 🦭. “King penguins as far as the eye can see 🇬🇸🐧”