we tried to, then the state we were gonna stick it all in said "eh maybe we don't want to the country's home for spent fuel, considering how it will stay hot for tens of thousands of years.
so our solution was to just... ignore it. store it in cooling pools at every plant spread all over the country. because hundreds of different waste holding ponds are SURE to be better than the thing we were planning lol.
They made the hard choice of where to put the waste and stuck with it long enough to build the facility. They call it “Onkalo”. It’s a creepy marvel of engineering.