An underground location might have possibilities for man-made reactor as well.
I think our planet can tolerate man-made nuclear reactors carefully constructed and judiciously managed.
I'm a fan of nuclear energy, just not one of piss poor engineering when the consequences of a major failure are so great.
I hope you're not suggesting that Fukushima was piss-poor engineering. It withstood an earthquake 40x more powerful than it was designed for, plus an end-of-the-world-sized tsunami, and while the situation has been dangerous and difficult, none of the reactors failed catastrophically.