In two places, however, no efforts sufficed to clear the way; the blocks rose in such jagged masses that it was absolutely impossible for the oxen to pull across them,—indeed it was with the greatest difficulty that when unyoked they were one by one got over; then tackles were fastened from the top of the rock to the waggons below—ropes and blocks being generally carried by travellers for such emergencies,—the oxen fastened to the ends of the ropes, and with the purchase so obtained the waggons were dragged bodily one by one over the obstacles.
It was not until late in the afternoon that the party passed safely through the defile and reached the valley beyond, men and animals worn out by the exertions they had undergone.
The day had not passed without excitement, for when they were engaged at the most difficult point of the journey the crack of rifles was heard far overhead, and for half an hour a steady fire was kept up there. Those below were of course wholly ignorant of what was passing there, and for some time they suffered considerable anxiety; for if their guard above had been overpowered they must have been destroyed by rocks cast down by their foes.
At the end of half an hour the firing ceased; but it was not until they camped for the night in the valley beyond the gorge that they learned from the hunters, who joined them there, what had happened. There were, Jumbo explained, three or four hundred natives, but fortunately these approached from the opposite side of the gorge; consequently the little party of defenders was in no danger of attack. The enemy had been disconcerted when they first opened fire, but had then pressed forward to get to the edge of the ravine. The superior weapons of the defenders had, however, checked them, and finding that there was no possibility of coming to close quarters with the little band, they had, after losing several of their number, abandoned the attempt and fallen back.
Soon after nightfall they were startled by a heavy crashing sound, and great rocks came bounding down the sides of the valley. The cattle and waggons were at once moved to the centre of the watercourse, and here they were safe, for the bottom of the valley was so thickly strewn with great boulders that, tremendous as was the force with which the rocks loosened far above came bounding down, these were either arrested or shivered into fragments by the obstacles before they reached the centre of the valley.
No reply to this bombardment of the position was attempted. The enemy were invisible, and there was no clue to their position far up on the hill-side. So long as the rolling down of the rocks was continued, it was certain that no attack at close quarters was intended; consequently, after posting four sentries to arouse them in case of need, the rest of the party, picking out the softest pieces of ground they could find between the stones, lay down to rest.
Before doing so, however, Mr Harvey had a consultation with the hunters. They said that the next narrow ravine was broken by several lateral defiles of similar character, which came down into it, and that it would therefore be quite impossible to keep along the top; whether there were any points at which the enemy could take post and assail them from above, they knew not.
There was, then, nothing to do but to push steadily on, and early next morning they resumed their way. On the preceding day a slight shower of rain had fallen, but this had been insufficient to increase notably the waters of the streamlet which trickled down among the rocks, for the most part hidden from view. The hunters were of opinion that heavier storms were at hand, and Mr Harvey agreed with them in the belief.
“We are in a very nasty position, boys,” he said, “and I wish now that I had turned south, and made my way down to the Limpopo again, and kept along its banks until past this mountain-range; it would have meant a loss of two months’ time, and the country which we shall reach when we get through this defile is a very good one for trade. Still, I am sorry now that I did not adopt that plan; for, what with the natives and the torrent, our position is an extremely serious one; however, there is nothing for it but to push on now. We have passed one out of the three gorges, and even if the other two are in as bad a condition as the one we came up yesterday, two more days’ labour will see us through it.”
As the caravan moved along the valley the yells of the natives, high up on the slopes, rose loud and menacing. They must have been disgusted at seeing that the labour upon which they had been engaged the whole night, of loosening and setting in motion the rocks, had been entirely thrown away, for they could see that the waggons and teams were wholly uninjured.