Oliver Tree's Antarctica journey has sparked widespread online discussion after a viral video from the trip featured direct references to the Agartha conspiracy theory and claims of an underground civilisation.
The footage, widely shared on Facebook and TikTok, shows Tree standing in front of ice cave formations while describing them as possible entrances to a hidden world beneath the Earth's surface. The clip has since circulated across social media, where it has been linked to long-running Hollow Earth and lizard people narratives.