The key back­ground event of the sto­ry­line that includes Thun­der Moon Tus­sle is the erup­tion of the Yel­low­stone super-vol­cano.  This erup­tion forms the basis for the cal­en­dar where the year of the erup­tion is des­ig­nat­ed Y+0. The Yel­low­stone erup­tion plays into some of the moti­va­tion or emo­tion­al state of the char­ac­ters.  It serves as a […]