Back when Minecraft was sold to Microsoft, Notch wanted to lead a final mark by creating a secret structure. Whatever, that version was never allowed to be released but it was leaked. The name of the version is TR_0.11, but the structure was unfinished. It only spawn in 1 in a million chunks, making it almost impossible to find and the rarest ever by far. The structure was so rare that there is no footage of it online, until a person named camman18 found it
After months of searching i found the Troll Face Outline