In my opinion, taking into account everything that has been said about the song; that is is supposed to be funny etc, this is Robert comparing the way Led Zep were sweeping through the world at the time, to the way the vikings did. He said they had just come from iceland, "we come from the land of the ice and snow". it is about them and their incredible domination of the music scene. Now, don't you think that sounds like Robert Plant's brand of humour? :)
In my opinion, taking into account everything that has been said about the song; that is is supposed to be funny etc, this is Robert comparing the way Led Zep were sweeping through the world at the time, to the way the vikings did. He said they had just come from iceland, "we come from the land of the ice and snow". it is about them and their incredible domination of the music scene. Now, don't you think that sounds like Robert Plant's brand of humour? :)