While another Reddit user (u/kempofight) said it could be a “secret imperial Japanese bunker." Someone else ... is in an area of fast sea ice in East Antarctica, just offshore of the coast ...

Less sceptical commentators suggested that it could, indeed, be the entrance to an underground bunker or a seed vault ... It’s not the first time Antarctica has piqued the interest of conspiracy ...

The International Association of Antarctica Tour Operators welcomed five provisional operators and eight associates. Bunker One A/S, Freestyle Adventure Travel, South America Shipping, UnWild ...