Large door sounds like this are a staple of game and video sound design, where a heavy entrance is used to signal scale, age and danger without any dialogue. The slow grind, shudder and echo suggest thick metal or stone moving on old hinges, which is why editors reach for it for castles, vaults, dungeons and temples. Shared widely as a standalone effect, it has become a reusable shorthand for a sealed place opening, a hidden area being discovered, or a story moving into a darker and more serious chapter.