Our path followed the Shire above the cataracts, which is now a broad deep river, with but little current. It expands in one place into a lakelet, called Pamalombe, full of fine fish, and ten or twelve miles long by five or six in breadth. Its banks are low, and a dense wall of papyrus encircles it. On its western shore rises a range of hills running north. On reaching the village of the chief Muana-Moesi, and about a day's march distant from Nyassa, we were told that no lake had ever been heard of there; that the River Shire stretched on as we saw it now to a distance of "two months," and then came out from between perpendicular rocks, which towered almost to the skies. Our men looked blank at this piece of news, and said, "Let us go back to the ship, it is of no use trying to find the lake." "We shall go and see those wonderful rocks at any rate," said the Doctor. "And when you see them," replied Masakasa, "you will just want to see something else. But there _is_ a lake," rejoined Masakasa, "for all their denying it, for it is down in a book." Masakasa, having unbounded faith in whatever was in a book, went and scolded the natives for telling him an untruth. "There is a lake," said he, "for how could the white men know about it in a book if it did not exist?" They then admitted that there was a lake a few miles off. Subsequent inquiries make it probable that the story of the "perpendicular rocks" may have had reference to a fissure, known to both natives and Arabs, in the north-eastern portion of the lake. The walls rise so high that the path along the bottom is said to be underground. It is probably a crack similar to that which made the Victoria Falls, and formed the Shire Valley.