Confused, you look to the Dragon.
"It's the castle," he says. "Trees are made of wood,
right?"
Nodding your agreement (he does have a point after all), the two of
you bank off for a neat landing on the castle grounds.
After dusting yourself off (rough landing), you look about. For such
a large castle, things seem to be very quiet.
Aymeril looks at you. "We should look inside."
"Inside! We're too big!"
"Look again."
And indeed, the castle was large enough to permit dragons to walk
through the front door. This was some tree!
"Well," asked Aymeril, "Do you think we should go
in?"
After some time, a great tree looms up on the horizon.