Meaning
This flag stands for French Guiana, a region of France on the northeast coast of South America, largely covered by Amazon rainforest.
It is linked with rocket launches from the spaceport at Kourou, rainforest trips and Creole food, often with 🚀 or 🌳. Do not confuse it with Guyana, a separate country further along the same coast. “Watched a rocket launch from Kourou 🇬🇫🚀”