Darkhenge

It's been three months since Rob's younger sister, Chloe, fell into a coma after a riding accident, and his life is in disarray. Rob's parents spend most of their time at his sister's bedside, and his best friend is afraid to talk to Rob about Chloe. To distract himself, Rob takes a job working at a secret archaeological site, where workers have uncovered a mystical ring of black timbers. At its center an ancient tree is buried upside down in the earth--a tree with the power to transport Rob to the Unworld, where Chloe lives in a forest of enchanting dreams, trapped between life and death. Catherine Fisher has combined a fascinating exploration of myth with a modern quest for understanding. Where is the land of the imagination? And if we found our way there, would we ever want to come back?

Rob's younger sister, Chloe, has been in a coma for three months, and his life is in disarray. To distract himself and avoid his grieving parents, Rob takes a job at a local—and mysterious—archaeological dig. There an ancient tree has been discovered, growing upside down—a tree that leads to the Unworld, the kingdom a seemingly happy and healthy Chloe presides over with no desire to return to her old life.

Worried about his sister Chloe's comatose state after a riding accident, teenage Rob, in an effort to distract himself, gets a job on a secretive local archeological dig. He soon finds himself drawn into a mysterious world of magic involving a powerful, centuries-old, shape-shifting Druid called Vetch who promises to help retrieve his sister from the "unworld" of her coma Worried about his sister Chloe's comatose state after a riding accident, teenage Rob, in an effort to distract himself, gets a job on a secretive local archeological dig and finds himself drawn into a mysterious world of magic involving a powerful, centuries-old, shape-shifting Druid called Vetch who promises to help retrieve his sister from the "unworld" of her coma.