All the time, Fazl kept a keen eye on the track and the river, winding along hundreds, even thousands, of feet below. The hill-tower lay somewhat to the west of the road which the Appletons had travelled with Major Endicott several months before, and from this road the track leading to the mine branched. The Gurkha knew the country pretty well. Fast as the aeroplane flew, he distinguished without hesitation the junction of the roads, and at his word Lawrence altered his course and, leaving the valley, steered over the hills on his right hand.
Very soon Fazl was able to descry the hill-tower in the far distance. The aeroplane was flying at the rate of at least a mile a minute; but minute after minute passed, and yet the tower seemed little nearer. When at last Lawrence had come close enough to it to be able to distinguish its general features, he saw that it was a single square-built tower of the usual Afghan type, perched on a small hill that rose sharply from the surrounding country. The side nearest him overhung an almost perpendicular declivity. Though solidly constructed in appearance, it was little more than a ruin. The top had partially fallen away, and in the wall facing him there was a long jagged fissure.
While still at some distance, Lawrence heard rifle-shots, though neither he nor Fazl could as yet see any signs of the enemy. He felt his heart thumping. He was still in time, then; for if all was over the firing would have ceased. Planing down in a long glide, he passed over the tower, still at a considerable altitude, and then suddenly caught sight of an encampment in a nullah on the farther side. In the brief moment of his crossing he was not able to get more than a glimpse of it; the nullah was so deep, and the encampment encompassed so closely by shrubs, dwarf pines, and other trees, that he might have missed it altogether but for a thin column of smoke arising from a fire in the bottom. But his rapid glance was enough for reassurance; the camp would have been struck if the tower was captured; it was clear that the Major was still holding out.
Dropping still lower, he began to sweep round in a circle. Before he reached the nullah again Fazl pointed out to him a number of isolated dots on the rugged surface below, spread over an extensive patch of ground. Some were small, others larger, and as he flew by Fazl explained that they were groups of the enemy, who had posted themselves wherever the nature of the ground gave them cover from the fire of the occupants of the tower. They were disposed in a rough semicircle about the western wall, in which there was a door. The approach on this side was by a steep slope; on the other side the tower was apparently inaccessible.
Between the wall and this semicircle of besiegers were scattered at irregular intervals a number of dark forms.
"Dead!" ejaculated Fazl.
They were evidently the bodies of men who had fallen in attempting to rush the place. Ganda Singh had mentioned that on the day he left the Afghans had made a vigorous assault, but were beaten back with heavy loss.
Bringing the aeroplane round so as to pass again over the encampment, Lawrence noticed a number of horses picketed near the rough huts. The Gurkha cried excitedly that the animals were kicking and straining at their ropes, and men were rushing to hold them. The noise of the engine had thrown them into a state of blind terror. Two or three broke away, and galloped madly up the nullah.
Several shots were fired at the aeroplane. Lawrence was somewhat surprised that the men were not struck with panic, like their horses, at the appearance of this strange booming monster of the air. It did not occur to him until afterwards that rumours of it must have been carried far and wide through the country for months past. Men who had seen it in its flights had described it to their neighbours or to wanderers whom they met in the hills; and although few, perhaps, of these tribesmen now present had actually seen it before, doubtless many of them had heard more or less veracious accounts of it. The frantic terror of the ponies suggested to Lawrence an idea on which he acted immediately. He abandoned his original purpose of making a preliminary reconnaissance of the whole position and then retiring to a distance to work out a plan. To a mounted force there is nothing so demoralizing as the loss of their horses. Lawrence knew this, and in a flash saw also that the Major, if he should escape from the tower, would have little to fear from an enemy pursuing on foot. He resolved therefore to attempt to stampede all the horses, and take advantage of the resulting confusion.
By the time he had come to this determination he was some distance past the nullah. Telling Fazl to drop a bomb among the horses when he again crossed it, he rose rapidly to a height of about a thousand feet, wheeled round, and swooped down in a long incline towards the camp. He scarcely realized that he was taking his life in his hands as he flew almost within point-blank range. Nor had he calculated on the possible effect of the coming explosion on the aeroplane. When he arrested his downward flight he was so near the ground that the bursting of the bomb set the machine rocking violently, and for a few moments he could scarcely control it. Cool-headed marksmen could then have taken fatal aim at him; but the Afghans were fascinated and paralysed by his headlong descent, and while they were still wondering and dreading what it might portend, the explosion of the bomb within a few yards of them struck them with terror.