“what do you think of affairs?” dick asked mr harvey, as, on leaving the chief’s hut, they walked back to their waggons.

“for the moment i think we are perfectly safe; the chief would not venture to attack us while we are in his village. in the first place it would put a stop to all trade, and in the second, far as we are from the frontier, he would not feel safe were a massacre to take place in his village. he knows well enough that were a dozen white men to come out to avenge such a deed, with a few waggon-loads of goods to offer to his neighbours as pay for their assistance, he and his tribe would be exterminated. when we are once on our way again we must beware. the feeling among the tribe at the loss they have sustained must be very bitter, although they may repress all outward exhibition of it to us, and if they attack us just as we are on the line between their land and their neighbour’s they can deny all knowledge of it. however, they shall not catch us asleep.”

“i see the men have put the waggons in laager,” tom said.

“yes, i told them to do so,” mr harvey answered; “it is the custom always with traders travelling north of the limpopo, and therefore will not be taken as a sign of suspicion of their good faith. a fair index to us of their disposition will be the amount of trade. if they bring their goods freely, we may assume that there is no fixed intention of attacking us; for if they are determined to seize our goods, those who have articles to trade would not care to part with them, when they would hope to obtain a share of our goods for nothing.”

the next morning mr harvey spread out a few of his goods, but hardly any of the natives came forward with articles for barter. in the afternoon mr harvey went across to the chief.

“how is it,” he asked, “that your people do not bring in their goods for sale? among the tribes through which i have passed i have done much trade; they see that i give good bargains—your people bring nothing. if they do not wish to trade with the white men, let them say so, and i will tell my brethren that it is of no use to bring their waggons so far.”

“my people are very poor,” the chief said; “they have been at war with their neighbours, and have had no time to hunt the ostrich or to get skins.”

“they cannot have been fighting all the time,” mr harvey rejoined; “they must have taken furs and skins—it is clear that they do not wish to trade. tomorrow morning i will go on my way; there are many other tribes who will be glad at the coming of the white trader.”

after mr harvey’s return to the waggons, it was evident that orders had been issued that some trade should be done, for several parcels of inferior kinds of ostrich feathers and skins were brought in. as it was clear, however, that no genuine trade was to be done, at daybreak the oxen were inspanned, and the caravan continued its journey.

for the next two days the track lay across an open country, and no signs of molestation were met with.

“we are now coming,” mr harvey said, “to the very worst part of our journey. the hills we have seen in front of us for the last two days have to be crossed. to-morrow we ascend the lower slopes, which are tolerably easy; but the next day we have to pass through a very wild gorge. the road, which is the bed of a stream, mounts rapidly; but the ravine is nearly ten miles in length. once at its head we are near the highest point of the shoulder over which we have to cross, and the descent on the other side is comparatively easy. if i could avoid this spot, i would do so; but i know of no other road by which waggons could cross the range for a very long distance either way; this is the one always used by traders. in the wet season it is altogether impassable, for in some places the ravine narrows to fifteen yards, with perpendicular cliffs on either side, and at these points the river, when in flood, rushes down twenty or thirty feet deep. even putting aside the danger of attack in going through it, i would gladly avoid it if i could, for the weather is breaking; we have already had some showers, and may get heavy thunderstorms and a tremendous downfall of rain any day.”

the next day the journey was an arduous one; the ground was rough and broken, and the valley up which the road lay was frequently thickly strewn with boulders, which showed the force with which the water in flood-time rushed down over what was now its empty bed.

after a long day’s work the caravan halted for the night at the spot where the valley narrowed to the ravine.

“it has been a pretty hard day’s work to-day!” tom said.

“it is nothing to to-morrow’s, as you will see,” mr harvey replied. “traders consider this defile to be the very hardest passage anywhere in south africa, and there are plenty of other bad bits too. in many cases you will see we shall have to unload the waggons, and it will be all that a double team can do to pull them up empty. sometimes of course the defile is easier than at others; it depends much upon the action of the last floods. in some years rocks and boulders have been jammed so thickly in the narrow parts that the defile has been absolutely impassable; the following year, perhaps, the obstruction has been swept away, or to a certain extent levelled by the spaces between the rocks being filled up with small stones and sand. how it is this season, i do not know; up to the time we left i had heard of no trader having passed along this way. i have spoken of it as a day’s journey, but it is only under the most favourable circumstances that it has ever been accomplished in that time, and sometimes traders have been three or four days in getting through.”

directly the caravan halted blacking and jumbo started to examine the defile; it was already growing dusk, and they were only able to get two miles up before it was so dark that they could make their way no further. they returned, saying that the first portion of the defile, which was usually one of the most difficult, was in a bad condition; that many enormous boulders were lying in the bottom; but that it appeared to be practicable, although in some places the waggons would have to be unloaded.

at daybreak the oxen were inspanned, and in a quarter of an hour the leading waggon approached the entrance of the gorge; it seemed cut through a perpendicular cliff, 200 feet high, the gorge through which the river issued appearing a mere narrow crack rent by some convulsion of nature.

“it would be a fearful place to be attacked in,” dick said, “and a few men with rocks up above could destroy us.”

“yes,” mr harvey said; “but you see up there?”

dick looked up, and on one side of the passage saw some tiny figures.

“the three hunters and ten of our men with muskets are up there; they started three hours ago, as they would have to go, jumbo said, five miles along the face of the cliff before they reached a point where they could make an ascent so as to gain the edge of the ravine. they will keep along parallel with us, and their fire would clear both sides; it is not usual to take any precaution of this sort, but after our attack of the other day, and the attitude of the chief and his people, we cannot be too cautious. after passing through the first three miles of the defile, the ravine widens into a valley a hundred yards wide; here they will come down and join us. there are two other ravines, similar to the first, to be passed through, but the country there is so wild and broken that it would be impossible for them to keep along on the heights, and i doubt whether even the natives could find a point from which to attack us.”

they had now fairly entered the ravine. for thirty or forty feet up the walls were smooth and polished by the action of the winter torrents; above, jagged rocks overhung the path, and at some points the cliffs nearly met overhead. although it was now almost broad daylight, in the depths of this ravine the light was dim and obscure.

the boys at first were awestruck at the scene, but their attention was soon called to the difficulties of the pass. the bed of the stream was covered with rocks of all sizes; sometimes great boulders, as big as a good-sized cottage, almost entirely blocked the way, and would have done so altogether had not the small boulders round them formed slopes on either side. the depths of the ravine echoed and re-echoed, with a noise like thunder, the shout of the driver and the crack of the whip, as the oxen struggled on. the waggons bumped and lurched along over the stones; the natives and whites all worked their hardest, clearing away the blocks as far as possible from the track required for the waggons. armed with long wooden levers four or six together prized away the heavy boulders, or, when these were too massive to be moved by their strength, and when no other path could be chosen, piled a number of smaller blocks, so as to make a sort of ascent up which the wheels could travel. the waggons moved but one at a time, the united efforts of the whole party being required to enable them to get along. when the leading waggon had moved forward a hundred yards, the next in succession would be brought up, and so on until the six waggons were again in line; then all hands would set to work ahead, and prepare the path for another hundred yards.

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.

as the caravan reached the point where the valley narrowed again, a mile above the halting-place, they began to descend the slopes, as if they meditated an attack, and the rifles of the whites and the three hunters opened fire upon them and checked those on the bare sides of the hill. many, however, went farther down, and descending into the valley crept up under the shelter of the stones and boulders, and as soon as they came within range opened fire with their bows and arrows. by this time, however, the waggons were entering the ravine which, although at its entrance less abrupt and perpendicular than that below, soon assumed a precisely similar character.

once well within its shelter mr harvey posted dick with the three hunters and four of the other natives to defend the rear. this was a matter of little difficulty. two or three hundred yards up the ravine a barrier, similar to those met with on the previous day, was encountered, and the waggons had to be dragged up by ropes, an operation which took upwards of three hours.

while the passage was being effected, dick with his party had remained near the mouth of the ravine, and had been busy with the enemy who pressed them; but after the last waggon had safely crossed the barrier they took their station at this point, which they could have held against any number of enemies.

the caravan proceeded on its way, men and animals labouring to the utmost; when, at a point where the sides of rock seemed nearly to close above them, a narrow line of sky only being visible, a great rock came crushing and leaping down, bounding from side to side with a tremendous uproar, and bringing down with it a shower of smaller rocks, which it had dislodged in its course. the bottom of the ravine was here about twelve yards wide, and happened to be unusually level. the great rock, which must have weighed half a ton, fell on one side of the leading waggon and burst into fragments which flew in all directions. fortunately no one was hurt, but a scream of dismay broke from the natives.

“steady!” mr harvey shouted; “push on ahead; but each man keep to his work—the first who attempts to run and desert the waggons i will shoot through the head.”

“tom, go on a hundred yards in front, and keep that distance ahead of the leading waggon. shoot down at once any one who attempts to pass you.”

rock followed rock in quick succession; there was, however, fortunately a bulge in the cliff on the righthand side, projecting some twenty feet out, and as the blocks struck this they were hurled off to the left side of the path. seeing this mr harvey kept the waggons close along on the right, and although several of the oxen and three or four of the men were struck by detached fragments from above, or by splinters from the stones as they fell, none were seriously injured.

long after the caravan had passed the point the rocks continued to thunder down, showing mr harvey that those above were unable to see to the bottom of the gorge, but that they were discharging their missiles at random. a short distance farther a cross ravine, a mere cleft in the rock, some five feet wide at the bottom, was passed, and mr harvey congratulated himself at the certainty that this would bar the progress of their foes above, and prevent the attack being renewed from any point farther on.

at this point so formidable an obstacle was met with in a massive rock, some thirty feet high, jammed in the narrowest part of the ravine, that the waggons had to be emptied and hauled by ropes up the almost perpendicular rock, the oxen being taken through a passage, which with immense labour the men managed to clear of stones, under one of the angles of the rock. it was not until after dark that they reached the spot where the ravine again widened out into a valley, having spent sixteen hours in accomplishing a distance of only three miles. however, all congratulated themselves that two-thirds of their labour was over, and that but one more defile had to be surmounted.

the rear-guard remained encamped at the opening of the defile, but the night passed without interruption, the natives being doubtless disheartened by the failure to destroy the caravan by rocks from above.

“do you think there is any chance of their attacking us to-night, down the slopes, as they did this morning?” tom asked mr harvey.

“none whatever,” the latter replied, “as you will see in the morning. this valley does not resemble the last; the rocks rise almost perpendicularly on both sides, and it would not be possible for them to make their way down, even if they wanted to do so.”

with the first dawn of light the oxen were inspanned. just as they were starting, one of the natives of dick’s party came up to mr harvey, and reported that the natives in large numbers were showing in the ravine, and the sharp crack of the rifles, which almost at the same moment broke out, confirmed his statement.

“the defile must be held,” mr harvey said, “until we are well in the next pass. when the last waggon has entered i will send back word, and they must then follow us and hold the entrance. tom, you had better take four more of the armed natives to strengthen the rear-guard. tell dick to come on and join me. you had your fair share of labour yesterday, and your hands are cut about so, by lifting and heaving rocks, that you would be able to do little to-day. it is rather a good sign that the natives are pressing forward in such force on our rear, as it shows that they have no great faith in any attempt they may make to-day to repeat their rock-throwing experiment of yesterday.”

as before two natives were sent on ahead to examine the defile, and mr harvey moved on with the caravan until he reached the upper edge of the valley, which was scarcely half a mile long. just as he did so the natives came hurriedly down the defile; they reported that a short distance up they had met with another obstacle, to the full as difficult as that which they had got the waggons over on the preceding day, and that, as they turned an angle in the defile, and came in sight of it, they were saluted by a shower of arrows, and saw a crowd of natives on the top of the barrier. they had thrown themselves down behind the boulders, and had obtained a good view of the natives and the obstacle. it was some forty feet farther up, and was formed by three or four great boulders jambed in together. on the other side small boulders and stones seemed to have been piled up by the torrent to the level of the rocks; but on the lower side it was almost perpendicular, and they questioned if a man could climb it,—certainly there was no passage for oxen.