A growing wave of short-form videos on TikTok is reshaping how obscure occult ideas circulate online. What looks like surreal entertainment—AI edits, fantasy landscapes, and meme-heavy clips—often carries layered ideological signals tied to hollow Earth theories and Nazi UFO lore. At the center of this trend sits “Agartha,” a mythic underground world that has found unexpected reach across millions of feeds. A striking example shows an AI-generated version of Adolf Hitler in Antarctica, smiling while holding...