In Chapter 11 of his book, London to Ladysmith via Pretoria, Churchill recounts his escape via Lourenco Marques:
On the sixth day the chance I had patiently waited for came. I found a convenient train duly labelled to Lourenço Marques standing in a siding. I withdrew to a suitable spot for boarding it—for I dared not make the attempt in the station—and, filling a bottle with water to drink on the way, I prepared for the last stage of my journey.
The truck in which I ensconced myself was laden with great sacks of some soft merchandise, and I found among them holes and crevices by means of which I managed to work my way to the inmost recess. The hard floor was littered with gritty coal dust, and made a most uncomfortable bed. The heat was almost stifling. I was resolved, however, that nothing should lure or compel me from my hiding-place until I reached Portuguese territory. I expected the journey to take thirty-six hours; it dragged out into two and a half days. I hardly dared sleep for fear of snoring.
I dreaded lest the trucks should be searched at Komati Poort, and my anxiety as the train approached this neighbourhood was very great. To prolong it we were shunted on to a siding for eighteen hours either at Komati Poort or the station beyond it. Once indeed they began to search my truck, and I heard the tarpaulin rustle as they pulled at it, but luckily they did not search deep enough, so that, providentially protected, I reached Delagoa Bay at last, and crawled forth from my place of refuge and of punishment, weary, dirty, hungry, but free once more.
Thereafter everything smiled. I found my way to the British Consul, Mr. Ross, who at first mistook me for a fireman off one of the ships in the harbour, but soon welcomed me with enthusiasm. I bought clothes, I washed, I sat down to dinner with a real tablecloth and real glasses; and fortune, determined not to overlook the smallest detail, had arranged that the steamer 'Induna' should leave that very night for Durban. As soon as the news of my arrival spread about the town, I received many offers of assistance from the English residents, and lest any of the Boer agents with whom Lourenço Marques is infested should attempt to recapture me in neutral territory, nearly a dozen gentlemen escorted me to the steamer armed with revolvers. It is from the cabin of this little vessel, as she coasts along the sandy shores of Africa, that I write the concluding lines of this letter, and the reader who may persevere through this hurried account will perhaps understand why I write them with a feeling of triumph, and better than triumph, a feeling of pure joy.
Source:
www.angloboerwar.com/books/49-churchill-...scape-from-the-boers