trend tok reel on Instagram: "The scene feels apocalyptic — and that’s why it works so well online. A concrete arch. A lone human silhouette. And a roaring, endless surge of white that looks alive. Your brain races for explanations: steam rupture, glacial melt, some buried machine tearing itself apart. But what you’re actually seeing is far less mythical — and somehow just as unsettling. This is industrial or firefighting foam flooding through a confined space. Foam behaves strangely at scale. D