The symbols have the following meaning: "Horizontal stripes of navy and white represent the long days and nights at Antarctica's extreme latitude. In the center, a lone white peak erupts from a field of snow and ice, echoing those of the bergs, mountains, and pressure ridges that define the Antarctic horizon. The long shadow it casts forms the unmistakable shape of a compass arrow pointed south, an homage to the continent's legacy of exploration. Together, the two center shapes create a diamond, symbolizing the hope that Antarctica will continue to be a center of peace, discovery, and cooperation for generations to come."
Own work using: https://www.truesouthflag.com/
True South Flag