In the 2020 film Tenet, arms dealer Sator is instructed to bury the "algorithm" by means of a cave in at Stalsk 12, and his success in doing this somehow ensures success for the future baddies who want to invert time/the world/entropy.
I don't quite understand why that is. Why can't people who oppose them just organize an excavation of the place? I mean, sure, there's a lot of dirt, but not more than your typical mine... and one one not even have to mine through stone, just clear rubble and dirt. So couldn't the Tenet organization just retrieve the "algorithm" again?