"Whose? Yours or mine?"
"Good lad. OK, here we go."
Zaphod scrambled down into the passage, followed by Trillian and Ford.
"Well I hope you all have a really miserable time," complained Arthur.
"Don't worry," Marvin assured him, "they will."
In a few seconds they had disappeared from view.
Arthur stamped around in a huff, and then decided that a whale's graveyard is not on the whole a good place to stamp around in.
Marvin eyed him balefully for a moment, and then turned himself off.
Zaphod marched quickly down the passageway, nervous as hell, but trying to hide it by striding purposefully. He flung the torch beam around. The walls were covered in dark tiles and were cold to the touch, the air thick with decay.
"There, what did I tell you?" he said. "An inhabited planet. Magrathea," and he strode on through the dirt and debris that littered the tile floor.
Trillian was reminded unavoidably of the London Underground, though it was less thoroughly squalid.
At intervals along the walls the tiles gave way to large mosaics — simple angular patterns in bright colours. Trillian stopped and studied one of them but could not interpret any sense in them. She called to Zaphod.
"Hey, have you any idea what these strange symbols are?"