The Thunderbird banked several times around the Arc Tree, the forest canopy below looking like a lumpy green carpet, and Rarity feared it would roost upon its branches. Instead the massive crow-like bird descended to a rocky outcropping. Rarity recognized the geography, and looked around to see if she could spot the Den. And there it was, maybe less than a mile away, she could see the small clearing and the lonely little hill in the center of it. 