Grim led the way straight to that amazing temple, and we invaded it, camels and all, off-loading the camels inside in a hurry and then driving them out again to lie down in the wide porch between the columns and the temple wall. The porch was so vast that even all our string of camels did not crowd it.

The main part of the interior was a perfect cube of forty feet, all hand-hewn from the cliff, and there were numerous rooms leading out of it that had once been occupied by the priests of Isis, but "the lion and the lizard" had lived in them since their day. We put the prisoners, including Ayisha's four men, in one room under guard.

That much was hardly accomplished when the spirit of our seventeen thieves reacted to their surroundings, and all the advantage of our secret arrival was suddenly undone. Half of them had gone outside to tie the camels, under Ali Baba's watchful eye; and it was he, as a matter of fact, who started it. From inside we heard a regular din of battle commencing—loud shouts and irregular rifle-fire—and I followed Grim out in a hurry.

There was no enemy in sight. Old Ali Baba was busy reloading his rifle fifty paces away in front of the temple door, facing us with his sons, in a semicircle around him, and they were shooting at something over our heads. Grim laughed rather bitterly.

"My mistake," he said. "I ought to have thought of that."

So I went out to see.

Surmounting the temple front, at least a hundred feet above the pavement and perfectly inaccessible, was a beautifully carved stone urn surmounting a battered image of some god or goddess. It was in shadow, because the cliff wall, from which the temple had been carved, overhung it; so it was peculiarly difficult to hit, even at that range; but they were all firing away at it as if Ali Higg and all his men were hidden behind the thing. There was no particular need to stop them, for they had made noise enough already to awake the very slumbering bones of Petra. Ali Baba advised me to shoot too, and I asked him why.

"To burst the thing."

"But why?"

"That we make a profit from this venture."