No white man had gazed at the lake before. Though one of the smaller African lakes, Shirwa is probably larger than all the lakes of Great Britain put together. Returning to Tete, the explorer now prepared for his journey to the farther Lake Nyassa. This was to be no new discovery. The Portuguese knew the locality of Lake Shirwa, and at the beginning of the seventeenth century Nyassa was familiar to them under another name. Landing at the same spot on the Shire banks as before, Livingstone, with thirty-six Makololo porters and two native guides, ascended the beautiful Shire Highlands, some twelve hundred feet above sea-level, and crossed the range on which Zomba, the residence of the British Commissioner for Nyassaland, now stands. When within a day's march of their goal they were told that no lake had ever been heard of in the neighbourhood, but, said the natives, the river Shire stretched on, and it would take two months to reach the end, which came out of perpendicular rocks which towered almost to the skies. "Let us go back to the ship," said the followers; "it is no use trying to find the lake." But Livingstone persevered, and he was soon rewarded by finding a sheet of water, which was indeed the beginning of Lake Nyassa. It was 16th September 1859. "How far is it to the end of the lake?" he asked. "The other end of the lake? Who ever heard of such a thing? Why, if one started when a mere boy to walk to the other end of the lake, he would be an old grey-headed man before he got there," declared one of the natives. Livingstone knew that he had opened up a great waterway to the interior of Africa, but the slave trade in these parts was terrible, gangs being employed in carrying the ivory from countries to the north down to the east coast. The English explorer saw that if he could establish a steamer upon this Lake Nyassa and buy ivory from the natives with European goods he would at once strike a deadly blow at the slave trade. His letters home stirred several missionaries to come out and establish a settlement on the banks of the Shire River. Bishop Mackenzie and a little band of helpers arrived on the river Shire two years later, and in 1862 Mrs. Livingstone joined them, bringing out with her a little new steamer to launch on the Lake Nyassa. But the unhealthy season was at its height, and "the surrounding low land, rank with vegetation and reeking from the late rainy season, exhaled the malarious poison in enormous quantities." Mrs. Livingstone fell ill, and in a week she was dead. She was buried under a large baobab tree at Shapunga, where her grave is visited by many a traveller passing through this once solitary region first penetrated by her husband.