"I don't think that will be necessary, Uncle," Gendry said. The Dragonpit was not necessarily suited to dragons. When he was in King's Landing, he had visited the collapsed, blackened Dragonpit. "That great domed fortress, the Dragonpit atop Rhaenys's Hill, has long since fallen into ruin. Its outer iron gates were once so broad that thirty mounted knights could ride through abreast, like an enormous cavern. But the dragons inside the Dragonpit never grew as large as their ancestors."
Daenerys nodded. She had never been to King's Landing, and most of what she knew about dragons and the past came from the old knight Ser Barristan Selmy and Maester Qyburn.
Maester Qyburn nodded and said, "I suspect the walls and chains were the problem. The dragons in the Dragonpit could not escape their restraints. Although they were well fed and had dedicated Dragonkeepers tending them, they had lost their freedom all the same. Since the last great dragon died, summers have grown shorter and winters longer and colder. It seems dragons may be closely connected to the climate."
"There is another problem. After Old Valyria was destroyed, the tide of magic slowly ebbed as well, so the later dragons could hardly compare to the ancient ones. Balerion the Black Dread should have been the last dragon to have seen Valyria. Even at the height of the Targaryen Dynasty, there were only dozens of dragons, while ancient Valyria had hundreds or thousands," the Red Priestess added as she watched the Dragon Horde.
"Then came the dragons' demise. After the Dance of the Dragons, they gradually dwindled."
"I have seen the dragon skulls. They grew smaller and smaller. As for the last dragon, people said she was a green female, small and weak, with withered wings, and the eggs she laid would