In the midst of the city, which appeared to cover an area of about four square miles, was an enormous square paved with flag-stones, which were covered to the depth of a couple of inches with a light grey dust, which, as they walked across it, remained perfectly still save for the disturbance caused by their footsteps.
There was no air to support it, otherwise it might have risen in clouds about them.
From the centre of this square rose a huge pyramid nearly a thousand feet in height, the sole building of the great silent city which appeared to have been raised most probably as a temple by the hands of its long-dead inhabitants.
When they got nearer they saw a white fringe round the steps by which it was approached, and they soon found that this fringe was composed of millions of white-bleached bones and skulls, shaped very much like those of terrestrial men, save that they were very much larger, and that the ribs were out of all proportion to the rest of the skeleton.
They stopped awe-stricken before this strange spectacle.

Redgrave stooped down and took hold of one of the bones, a huge femur.

It broke in two as he tried to lift it, and the piece which remained in his hand crumbled instantly to white powder.
"Whoever they were," he said, "they were giants.

When air and water failed above, they came down here by some means and built this city.

You see what enormous chests they must have had.