Counterpoint.

What if they buried it, like real deep, like 50m+ deep.

It was at the bottom of a river for 2500 years, it’s honestly more effective than taking the ring right into enemy land.

If you read the books, a lot of people thought Sauron wasn’t ever getting the One back because they were convinced it must’ve been swept out to sea.

I wouldn’t put it past the ring to manipulate some octopus to carry it back to land.

Have the dwarves cast in into a huge lump of steel a dump it way out in the ocean.

Fifth-age Mordorian Nazis would scour the ocean floor for it in their submersibles until they find it.

At that point no one in Middle Earth would still even believe in the One Ring, if any had even heard of it outside of fairy tales told to children.

I’m not big on lotr lore. My Atlas of Middle Earth was mostly just used for RPG, and the Silmarillion has been left untouched on the book-shelves in my home. But are you saying that there’s a nazi-hunting-artifacts storyline? Like Indiana Jones in Middle Earth?

No, in just made that up. Assuming technology continues to develop, if sauron hasn’t been defeated by the fifth age there very well might be a mordorian nazi treasure hunter storyline

Oh… it would be kinda cool though: the modern world set in middle earth. Maybe add a little steam punk dwarven tech and some elves with electric doodads. I could definitely see an elven technological schism with one traditional group and another consisting of hipsters with the latest innovations.