Tell us how! Boron epoxy underground bubbles?
It is somewhere underground, somewhat in the ground water, and hopefully cooled off enough to become solid.
But these three several hundred ton slugs of dirt, rocks, and a reactor core, are beyond my thinking.
That is the scary part, what you cant see can kill you, and if you could see the melted core, you should be running away.
The main problem seems to be the groundwater.
The area is closed for fishing, so more fish will grow there, and whales and Bluefin come to feed.
Reincarnation might be true, so I worry about the future.