Gaia Lyrics

Lyric discussion by Katatonia 

Cover art for Gaia lyrics by Tiamat

Great song. Great live! Sounds a lot like it is about the mistreatment of the earth. But I am confused with this passage:

If the earth is dying of a growing thirst Rain shall fall on dried out soil

What does this mean? This sounds like there is some hope despite the human thirst. What kind of? Is this about the flooding and Noah's ship?