Complex sentence: David and the Woodsman travel to the edge of the forest; as they approach a canyon guarded by trolls and harpies, a pack of wolves and Loups appear and attempt to capture David.
Split into simpler sentences: David and the Woodsman travel to the edge of the forest. As the two of them approach a canyon guarded by trolls and harpies, a large group of wolves and Loups appear out of the forest and attempt to capture David.