Dusk Dragon Mausoleum?!

"This place… What… Who made all this?"

The dragon turned its head to Jack, surprised by such a question. "You can see down here?"

"Not exactly…" replied Jack. "But I can sense the ruins through the ground. You used sound waves to find your way, right? I can do something similar through the ground, but I can't get a clear picture like you can."

"Come in. We've been expecting you."

A calm voice caught Jack off guard. The dragon that had guided Jack then nodded and said, "Enter that passage and the following room. If anyone can explain things, it will be Perchet, should you be worthy."