Land of Lakes and Volcanoes

My awareness of pop culture has clearly fallen off because I heard "Love the Way You Lie" for the first time on Friday (thank you Jimmy Fallon), and I really liked it.  Then another friend posted the video and I loved that, too.  Before Googling, and getting the answer from the internet, I thought about watching Rihanna & Eminem singing a song about a violent relationship, and well, I have thoughts. Before these thoughts, a disclaimer:  I've never been in a physically violent relationship.  I watched my parents, whose relationship was emotionally violent and on rare occasions physically violent.  I would characterize our childhood home as emotionally abusive, both to adults and us kids.  As an adult, I've been in one relationship that was extremely passionate, both in good times and bad.  It was the kind of relationship I could imagine easily devolving, and it scared me.  When I watched this video, that's the relationship I thought of.  So I don't know w