Nobody, however, had been killed, though much of the luggage was lost, and what remained had to be spread out to dry. Many of Mackenzie's people, however, when they took stock of their misfortunes, were rather pleased than otherwise, as they thought the disaster would stop him from any further attempt to reach the Western Sea. He wisely listened to their observations without replying, till their panic was dispelled, and they had got themselves warm and comfortable with a hearty meal and a glass of rum; though a little later only by their indifferent carelessness they nearly exploded the whole of the expedition's stock of gunpowder.

Fortunately the weather was fine. Mackenzie and his fellow countryman, Mackay, allowed nothing to dismay them or damp their spirits. Bark was obtained from the forest, the canoe was repaired, and they heard from their guide that this violent little stream would before long join a great and much smoother river. But they were tormented with sandflies and mosquitoes, and a day or two afterwards the guide bolted, while the expedition had to cross morasses in which they were nearly engulfed, and the water journey was constantly obstructed by driftwood. Nevertheless, at last they had "the inexpressible satisfaction of finding themselves on the bank of a navigable river on the western side of the first great range of mountains". Here they re-embarked, and were cheerful in spite of heavy rain.

As they paddled down this great stream, more than two hundred yards wide, snow-capped mountains rose immediately above the river. The current was strong, but perfectly safe. Flocks of ducks, entirely white, except the bill and a part of the wing, rose before them. Smoke ascending in columns from many parts of the woods showed that the country was well inhabited, and the air was fragrant with the strong odour of the gum of cypress and spruce fir.

Then came a series of cascades and falls and a most arduous portage of the heavy canoe. These labours were somewhat lightened by the discovery of quantities of wild onions growing on the banks; but these, when mixed with the pemmican, on which the party was subsisting, stimulated their appetites to an inconvenient degree, seeing that they were on short commons. Meeting with strange Indians they found no one to interpret, and had to use signs. But on the banks of the Fraser they were lucky enough to find the "real red deer", the great wapiti stag, which is absent from the far north-west, beyond the region of the Saskatchewan. The canoe was loaded with venison. The banks of the Fraser River sank to a moderate height and were covered with poplars and cypresses, birch trees, junipers, alders, and willows. The deserted house or lodge of some Amerindian tribe was visited on the banks. It was a finer structure than anything that Mackenzie had seen since he left Fort Michili-Makinak in upper Canada. It had been constructed for three families. There were three fireplaces and three beds and a kind of larder for the purpose of keeping fish. The whole "lodge" was twenty feet long by three wide, and had three doors. The walls were formed of straight spruce timbers with some skill of carpentry. The roof was covered with bark, and large rods were fixed across the upper part of the building, where fish might hang and dry.

As they continued to descend the Fraser River, with here and there a rapid which nearly swamped the canoe, and lofty cliffs of red and white clay like the ruins of ancient castles (stopping on their way to bury supplies of pemmican against their return, and to light a fire on the top of the burial place so as to mislead bears or other animals that might dig it up), they were more or less compelled to seek intercourse with the new tribes of Amerindians, whose presence on the river banks was obvious. As usual, Mackenzie had to exercise great bravery, tact, and guile to get into peaceful conversation with these half-frightened, half-angry people. The peacemaking generally concluded with the distribution of trinkets amongst the men and women, and presents of sugar to the children. Talking with these folk, however, through such interpreters as there were amongst the Indians of his crew, he learnt that lower down on the Fraser River there was a peculiarly fierce, malignant race, living in vast caves or subterranean dwellings, who would certainly massacre the Europeans if they attempted to pass through their country on their way to the sea. He therefore stopped and set some of his men to work to make a new canoe. He noticed, by the by, that these Amerindians of the Fraser had small pointed canoes, "made after the fashion of the Eskimo".

Renewing their voyage, they reached a house the roof of which just appeared above the ground. It was deserted by its inhabitants, who had been alarmed at the approach of the white men, but in the neighbourhood appeared gesticulating warriors with bows and arrows. Yet these people of underground houses turned out to be friendly and very ready to give information, partly because they were in communication with the Amerindian tribes to the east of the Rocky Mountains. From the elderly men of this tribe Mackenzie ascertained that the Fraser River flowed south by east, was often obstructed by rapids, and, though it would finally bring them to a salt lake or inlet, and then to the sea, it would cause them to travel for a great distance to the south. He noticed the complete difference in the language of these Atna or Carrier Indians[10] and that of the Nagailer or Chin Indians of the Athapaskan group on the eastern side of the Rocky Mountains.

He, however, learnt from these Atna Indians that although the Fraser was out of the question as a quick route to the sea, if he retraced his journey a little up this river he would find another stream entering it from the west, and along this they could travel upstream. And then the route to the water "which was unfit to drink", and the region to which came people with large ships, would be of no great length. Accordingly, after having had a tree engraved with Mackenzie's name and the date, by the bank of the Fraser River, the expedition returned to the subterranean house which they had seen the day before.

"We were in our canoe by four this morning, and passed by the Indian hut, which appeared in a state of perfect tranquillity. We soon came in sight of the point where we first saw the natives, and at eight were much surprised and disappointed at seeing Mr. Mackay and our two Indians coming alone from the ruins of a house that had been partly carried away by the ice and water, at a short distance below the place where we had appointed to meet. Nor was our surprise and apprehension diminished by the alarm which was painted in their countenances.... They informed me they had taken refuge in that place, with the determination to sell their lives ... as dear as possible. In a very short time after we had separated, they met a party of the Indians, whom we had known at this place, and were probably those whom we had seen landing from their canoe. These Indians appeared to be in a state of extreme rage, and had their bows bent, with their arrows across them. The guide stopped to ask them some questions, which our people did not understand, and then set off with his utmost speed. Mr. Mackay, however, followed, and did not leave him till they were both exhausted with running.... The guide then said that some treacherous design was meditated against them, ... and conducted them through very bad ways as fast as they could run. When he was desired to slacken his pace, he answered that they might follow him in any manner they pleased, but that he was impatient to get to his family, in order to prepare shoes and other necessaries for his journey. They did not, however, think it prudent to quit him, and he would not stop till ten at night. On passing a track that was but lately made, they began to be seriously alarmed, and on enquiring of the guide where they were, he pretended not to understand. Then they all laid down, exhausted with fatigue, and without any kind of covering; they were cold, wet, and hungry, but dared not light a fire, from the apprehension of an enemy. This comfortless spot they left at the dawn of day, and, on their arrival at the lodges, found them deserted; the property of the Indians being scattered about, as if abandoned for ever. The guide then made two or three trips into the woods, calling aloud, and bellowing like a madman. At length he set off in the same direction as they had come, and had not since appeared. To heighten their misery, as they did not find us at the place appointed, they concluded that we were all destroyed, and had already formed their plan to take to the woods, and cross in as direct a line as they could proceed, to the waters of the Peace River, a scheme which could only be suggested by despair. They intended to have waited for us till noon, and if we did not appear by that time, to have entered without further delay on their desperate expedition."

Making preparations for warfare, if necessary, yet neglecting no chance of re-entering into friendly relations with the natives, Mackenzie set to work to repair the wretched canoe, which was constantly having holes knocked through her. He dealt tactfully with the almost open mutiny of his French Canadians and Indians. At last everyone settled down to the making of a new canoe, on an island in the river where there were plenty of spruce firs to provide the necessary bark. Even here they were plagued with thunderstorms. Nevertheless, the men set to work, and as they worked Mackenzie addressed them with simple fervour, saying he knew of their plans to desert him, but, come what might, he was resolved to travel on to the westwards until he reached the waters of the Pacific.

This calmed down the mutineers, and, to the great relief of all concerned, that very afternoon the runaway guide of the Atna people returned and apologized for having deserted them. He then offered once again to conduct them to the seacoast. Nevertheless, again he fled, and Mackenzie was obliged to guide the expedition, according to the information he had gathered from the natives, up the small western affluent of the upper Fraser, which he called the West Road River (now known as the Blackwater).