Meggie looked up at the dense thicket of branches. She had never set eyes on a tree like it before. The bark was reddish brown, but as rough as the bark of an oak, and the trunk did not branch until high up in the tree, although it had so many bulges that you could find footholds and handholds everywhere. In some places huge tree fungi formed platforms. Hollows gaped in the towering trunk, and crevices full of feathers showed that human beings were not the only creatures to have nested in this tree.