We had lunch in the middle of a frozen lake today. I must confess, that I was not at all comfortable with this venue. You could hear and feel the ice moving beneath your feet. Mark assured me we were safe but I was quite relieved when we reached terra firma again. Notice the little ice huts in the background. For reasons know only to Minnesotans, natives erect small houses on the frozen lakes, fish through holes in the ice and drink lots of beer. Wait, the reason has just become apparent to me.