its part of the "riddle me this" quest. the wiki says after I pick up the last spark I need to fight a mob that appears. well that never happened...instead when I pick up the last spark the quest continues telling me to "find the strange light where the plants walk" weird huh? what to do?
http://eq2.wikia.com/wiki/Riddle_Me_This on wiki, has 3 waypoints to visit, a mob to kill, and then return.