You tell Moonflower to save her energy, and that she might need it later.

Moonflower: "You're the boss!"

You walk along the western ravine around the castle ruins. On the way, you ask Windcaller how his neck is.

Windcaller: "It... feels rather stiff. I'm sure it will get better once we've had some rest."

After a few more minutes of walking, you arrive at a rope bridge. Despite the strong winds, it seems sturdy enough to hold a group of ponies. Up ahead, the remains of an ancient castle lie dormant.