They flew over giant trees, and waterfalls, and towering cliff faces, and Arden's face was alight with joy and wonder as they passed them all. She kept clutching Cal's arm - again, not in fear, there was no fear in her at all - but to point at something else as she noticed it. The rainbow hanging over the top of the falls as the sun refracted through the water vapour. That tree, huge even at this distance, which meant that it must be the size of an actual city if they were to get close enough to it. A lake that glimmered in the sunshine as they arced overhead.

"How can anyone look at this place and think of anything other than how beautiful it is?" she asked. "And want to protect it?"