The only reason the landscape is a static unchanging thing to you is because you haven't been taught that nothing could be further from the truth by a healthy culture, there is no easy place to put these barrels, most people who aren't Geologists prescribe most of the Earth's surface to being a passive background that things happen to and in not a character itself that acts sometimes over great lengths of time and sometimes over shockingly small lengths of time.
That is what people who aren't Geologists really have a hard time understanding who aren't leftists or haven't been raised with Indigenous culture, the landscape is a verb not a noun and this idea there are caverns underground that will be forgotten by the movement above and rest safe for eternity is a fantastical way of thinking of the Earth System. It is a devastatingly incomplete way of seeing the world that sets up future generations to be screwed over by our hubris and lack of understanding of the dynamics we live within.
I am not entirely against Nuclear Power, but I refuse to have people explain to me Geologic lengths of times and contexts who have spent no amount of practical time actually learning how landscapes even far from active fault lines can change radically over time.