This is my favourite Metallica song and one of my favourite songs overall really. The funny thing is that Metallica doesn’t really like it, it’s one of the rarest songs they perform. I love it because I’ve been, ya know, metaphorically “Trapped Under Ice” and I really relate to this. Turns out though that it’s kind of a Maiden-esque Sci Fi song about some guy in a super science accident literally trapped under ice, which Metallica has explained they don’t much care for as they evolved as writers