walls

Though the Bull dug into the walls with his horns, he tired before he could rout out the Mouse, and crouching down, went to sleep outside the hole.

Strange that now in its old age this dark business should have cast its shadow upon the venerable walls!

Then the big gate swung slowly open, and they all passed through and found themselves in a high arched room, the walls of which glistened with countless emeralds.

It was a big, round room with a high arched roof, and the walls and ceiling and floor were covered with large emeralds set closely together.