Faceny's, the second is Amfuse's, the third is Thire's. From him
Threal gets it name."

"But this is mere nomenclature. In what sense are there three
worlds?"

Corpang passed his hand over his forehead. "All this we can discuss
as we go along. It's a torment to me to be standing still."

Maskull stared again at the spot where Leehallfae's body had lain,
quite bewildered at the extraordinary disappearance. He could
scarcely tear himself away from the place, so mysterious was it. Not
until Corpang called to him a second time did he make up his mind to
follow him.

They set off from the rock wall straight across the airlit plain,
directing their course toward the nearest trees. The subdued light,
the absence of shadows, the massive shafts, springing grey-white out
of the jetlike ground, the fantastic trees, the absence of a sky, the
deathly silence, the knowledge that he was underground--the
combination of all these things predisposed Maskull's mind to
mysticism, and he prepared himself with some anxiety to hear
Corpang's explanation of the land and its wonders. He already began
to grasp that the reality of the outside world and the reality of
this world were two quite different things.

"In what sense are there three worlds?" he demanded, repeating his
former question.

Corpang smote the end of his staff on the ground. "First of all,