Don't bury it. The biggest problem with that is the heat builds up. Just keep it near the surface, where the heat can be dissipated.

In 300 years, the fission products are mostly gone (except for 7 "long lived fission products" with halflives in the 10^5 years or longer), so the waste is much easier to reprocess or otherwise dispose of. The problem then is that the radioactivity has dropped so much that amateur diversion of plutonium becomes a concern.

Would you be fine if we store the nuclear waste in your community then? How will you mark it to warm future generations of its dangers?

Absolutely! If there is suitable geology, be my guest. Or if there were a neighborhood nuclear power plant that was storing waste medium-term, that would also be welcome.

I imagine my neighbors would be less welcoming, but they'll complain about anything (heart of NIMBYville here)

Oh and you don't mark it. It's in a deep hole, no one's going own there.

> Absolutely! If there is suitable geology, be my guest.

I suspect, geology is not suitable.

> How will you mark it to warm future generations of its dangers?

This is a question that's been looked into, and with an interesting past: https://en.wikipedia.org/wiki/Long-time_nuclear_waste_warnin...