The Wizard by H. Rider Haggard

On the third morning from this night whereof the strange events have been described, an ox-waggon might have been seen outspanned on the hither side of those ranges of hills that were visible from the river. These mountains, which although not high are very steep, form the outer barrier and defence of the kingdom of the Amasuka. Within five hundred yards of where the waggon stood, however, a sheer cliffed gorge, fire-riven and water-hewn, pierced the range, and looking on it, Owen knew it for the gorge of his dream. Night and day the mouth of it was guarded by a company of armed soldiers, whose huts were built high on outlook places in the mountains, whence their keen eyes could scan the vast expanses of plain. A full day before it reached them, they had seen the white-capped waggon crawling across the veldt, and swift runners had reported its advent to the king at his Great Place.

Back came the word of the king that the white man, with the waggon and his servant, were to be led on towards the Great Place at such speed as would bring him there in time for him to behold the last ceremony of the feast of first-fruits; but, for the present, that the waggon itself and the oxen were to be left at the mouth of the gorge, in charge of a guard, who would be answerable for them.