Moondancer pushed her glasses up her nose as she consulted her notes. "I found quite a few mentions of the Crystal Empire, and the frozen north, but we know it's not in the Empire itself because Starswirl wouldn't have been able to use it while the Empire was banished. All the mentions of the frozen north concerned the windigoes though, and no actual studies of them, so I'm not sure we should include them or not. Other than that, I have him as having spent a lot of time studying the ancient temples around the Tenochtitlan Basin and the Forbidden jungle, which is odd, because I thought that place was fictional."