This song isn't as bad as everybody seems to make it to be. The lyrics are cheesy, but they are not Maiden's worst. The music during the verses seems a bit tacky, but come on, this is a song about cavemen running around somewhere in prehistory. The instrumental section on the other hand is among the most dramatic Maiden have ever done, and that alone makes it in fact a particularly memorable piece.
That, and the way Bruce sings the land was swamp and caves were HOME! I'm still thinking Nicko sneaked in from behind and pinched his balls at that particular moment. Puts a smile on my face every time, anyway.
6/10.