Well, if we can get to that White Rock we have a chance of life." Orme studied it hurriedly and repeated, "Come down; we may be seen up here." We descended and began our investigations in feverish haste.

This was the sum of them: In the arch under the tower were set two great doors covered with plates of copper or bronze beaten into curious shapes to represent animals and men, and apparently very ancient.

These huge doors had grilles in them through which their defenders could peep out or shoot arrows.

What seemed more important to us, however, was that they lacked locks, being secured only by thick bronze bolts and bars such as we could undo.
"Let's clear out before the mist lifts," said Orme.

"With luck we may get to the pass." We assented, and I ran to the camels that lay resting just outside the arch.