Knot Gneiss
Piers Anthony
 This is about Jumper's friend Wenda Woodwife, who has a nymphly front but no back, being hollow from behind, who speaks with the forest dialect: "I wood knot dew that to yew." She has to transport a boulder made of petrified reverse wood that naturally terrifies (petrifies) everyone else. She has to put together a group of six or more and starts out her journey asking help from her best friend Jumper, King of the Spiders