On leaving the falls Lewis saw a herd of a thousand buffalo, and killed one for supper. In his eagerness he failed to reload his rifle, when he beheld a grizzly bear stealing on him and not over twenty paces distant. “He felt that there was no safety but in flight. It was in the open, level plain, ... so that there was no possible mode of concealment.... As soon as he turned the bear ran, open mouthed and at full speed, upon him. Captain Lewis ran about eighty yards, but finding that the animal gained on him fast ... he turned short, plunged into the river about waist deep, and facing about presented the point of his spontoon. The bear arrived at the water’s edge within twenty feet of him, but as soon as he put himself in this posture of defence, the animal seemed frightened and retreated with as much precipitation as he had pursued.”

The means and route for portage presented difficult problems for the exhausted party, as it was clearly evident that the men could not carry the boats on their shoulders such great distances. Fortunately a creek was found at the foot of the falls, where the banks afforded easy access to the highlands. It was first necessary to cross the Missouri, and here the party went into camp while preparations were made for the portage.

Lieut. Clark with a few men carefully surveyed the trail to be followed, others engaged in hunting in order to lay up a store of dried meat, and the handy men of the party set to work on a carriage for the transport of the boats. By good fortune they found a large cottonwood-tree, about twenty-two inches in diameter, large enough to make the carriage-wheels, “perhaps the only tree of that size within twenty miles.” As they had decided to cache a part of their stores and leave their largest boat behind, its mast supplied them with two axle-trees.

In the meantime the survey of Clark showed that the series of cataracts had an aggregate descent of three hundred and sixty-three feet in seventeen miles, and that a very difficult portage of thirteen miles was necessary. The country was barely practicable for travel, and was covered with frequent patches of prickly pear, against the tiny penetrating needles of which the moccasins of the dragging men afforded almost no protection. To add to their misfortunes, when about five miles from their destination the axle-trees, made of the old mast, broke, and then the tongues of green cottonwood gave way. After diligent search sweet-willow trees were found with which they managed, by shifts and expedients familiar to frontiersmen, to patch up the carriage so as to go on. It broke down so completely about a half mile from the new camp that it was easier to carry boat and baggage on their shoulders than to build a new conveyance. The condition of the party is evident from the narrative:

“The men are loaded as heavily as their strength will permit; the crossing is really painful; some are limping with the soreness of their feet, others are scarcely able to stand for more than a few minutes from the heat and fatigue; they are all obliged to halt and rest frequently, and at almost every stopping-place they fall, and many of them are asleep in an instant.”

Later it was needful to repair the carriage and to travel over and over the portage until, after ten days of weary labor, all the equipage was above the falls.

In the meantime the hunters had accumulated nearly half a ton of dried meat, buffalo being plenty. The grizzly bear, however, was also present, active, aggressive, and dangerous as usual. They infested the camp at night, causing much alarm, and once carried off buffalo-meat from a pole within thirty yards of the men. A hunter sent out to bring in meat was boldly attacked by a bear and narrowly escaped death, being pursued to within forty paces of the camp. Another animal was killed when rushing up to attack men who had to climb a tree, while making sufficient noise to attract their rescuer, Drewyer, the interpreter and hunter, who shot him through the head. He proved to be the largest they had seen, being eight feet seven and a half inches long, while his fore feet measured nine inches and hind feet seven inches across, and eleven and three-quarters long exclusive of the talons. Another hunter was attacked by a grizzly, fortunately near the river, so that he was able to conceal himself under a steep bank; otherwise he would probably have lost his life.

The perils of navigation and the chase were not all, for a cloud-burst and hail-storm contributed to their danger and suffering. The hail was so large and driven so furiously by the high wind that it knocked down several of the men, one three times, bruising another very badly and wounding some so that they bled freely. The fallen hail lay in drifts, which in places completely covered the ground, and some of the stones weighed three ounces and measured seven inches in circumference. Clark, Chaboneau and his wife took shelter under shelving rocks in a deep ravine, congratulating themselves on their protected position. Suddenly, however, the rain fell in a solid mass, and instantly collecting in the ravine, came rolling down in a dreadful torrent, carrying rocks and everything before it.

“But for Lieut. Clark, Chaboneau, his wife and child would have been lost. So instantly was the rise of the water, that as Lieut. Clark had reached his gun and began to ascend the bank, the water was up to his waist, and he could scarce get up faster than it rose, till it reached the height of fifteen feet, with a furious current which, had they waited a moment longer, would have swept them into the river just above the Great Falls, down which they must have inevitably been precipitated.”