"And what is there beyond?"
"Emptiness—there must be a precipice."
"Take a stone and throw it, we will listen to hear if it is a long time falling."
In the darkness I hear Antek feeling to find a fragment of crumbling rock.
"I am throwing," said he, "listen."
I open both ears.
Silence!
"Haven't you heard anything?"
"No!"
"We have ended up nicely! The place must be a hundred fathoms deep."