In most years Camas Prairie served as the marshalling grounds for the annual buffalo hunt. On these occasions, Bannock and mounted Shoshone of the Fort Hall area joined forces. While it is possible that these groups combined also with the Lemhi Shoshone for the buffalo hunt, we could obtain no corroboration of this grouping from informants. Informants generally stated that the buffalo party was composed chiefly of Bannock and was led by the Bannock chief. While many Fort Hall Shoshone took part, most hunted elk, moose, and deer on the western side of the Continental Divide. Furthermore, some Bannock did not take part in the hunt and similarly hunted in Idaho and southwestern Wyoming.
It should be noted that information on the entry of Shoshone or Bannock groups into the buffalo grounds of Montana occurs very early in the historical period in the reports of Lewis and Clark, and also very late in this period. It is true that there is little pertinent historical data on southwestern Montana, but there is a distinct possibility that the Shoshone and Bannock did not cross the Divide annually. Buffalo were found on the upper Snake River prairie until about 1840, and the presence of the Blackfoot in Montana made ventures there risky. It is noteworthy that in the early reservation period the Bannock crossed the Divide into the Big Horn drainage in company with the Eastern Shoshone; the trip through Green River and thus to Wind River was not by any means the shortest route to the buffalo country. On the other hand, informants gave highly detailed information on the trail to the Montana buffalo grounds and showed detailed traditional knowledge of it. Without more continuous historical data such as is available on transmontane hunting patterns in Wyoming, any question of historical changes in hunting itineraries must remain open.
From Camas Prairie, contemporary informants say, the buffalo party skirted the southern end of the Sawtooth Mountains and went up the Little Lost River, crossing over to the Lemhi River. They then traveled down the Lemhi and across the Divide via Lemhi Pass. Descending the east side of the mountains, the buffalo party arrived on the Beaverhead River at a point close to Armstead, Montana. They then traveled down the Beaverhead past Twin Bridges to the point where the Beaverhead becomes the Jefferson River and thence downstream to the Three Forks of the Missouri. One informant said that the Beaverhead Valley contained buffalo in earlier times, but by the period preceding the treaty it was necessary to go much farther east. From Three Forks, Montana, the buffalo route followed the present line of U.S. Highway 10 through Bozeman and over Bozeman Pass. The party pressed eastwards until it arrived in the country called Buffalo Heart by the Bannock because a near-by mountain supposedly had the shape of a buffalo heart; this was the fall and winter hunting grounds of the Idaho Shoshone and Bannock. It was near the Yellowstone River between Big Timber and Billings, Montana, though the migratory habits of buffalo and buffalo hunters would dictate considerable movement within the region.
The buffalo hunters remained to the west of the Bighorn River and, presumably, they did not encroach too heavily upon the Crow. While the Crow considered the Eastern Shoshone enemies, we have no information on hostilities between them and the Idaho people. The Bannock actually camped with the Crow in the late 1860's and early 1870's.
To return to the route to the buffalo country, some alternate trails must be noted. After leaving Camas Prairie the party sometimes passed through Arco and Idaho Falls, Idaho, and then headed north over the Divide, via Monida Pass. They followed Red Rock Creek down to its confluence with the Beaverhead and followed the previously described trail.
Also, the buffalo party did not always reach Bozeman Pass via the Three Forks of the Missouri. The alternate route crossed from the Beaverhead River to the Madison River via Virginia City. The party continued down the Madison a short distance and then went east to Bozeman where the trail joined the one already outlined. There were undoubtedly several other routes that are no longer remembered by informants.
The buffalo hunt was conducted by much the same techniques as already described for the Eastern Shoshone. Two scouts were sent out to report upon the presence of buffalo, and the party surrounded and pursued the herd as a group. No police societies to prevent hunting by individuals were reported by our Idaho Shoshone and Bannock informants, nor is there historic evidence of the institution. Guns, spears, and the bow and arrow were used.
Meat was jerked and dried on the plains and the slain buffalo were skinned and their hides dried. When as much of these commodities as the pack horses could carry was accumulated, the party struck out for home. Owing to the great distance between the Snake River Valley and the buffalo country, winter usually overtook the party en route. If the passes were still open when the hunters reached the Divide, they went into winter quarters on the Snake River. If the heavy snows caught the party while still far from the mountains, they kept traveling slowly westward and attempted to encamp in one of the well wooded and sheltered valleys on the east side of the Divide. When the passes opened in the spring, they crossed into Idaho.
During the winter the party subsisted upon the dried buffalo meat and whatever game could be killed. An important product of the hunt, the most important according to one informant, was the buffalo hides from which tipis and robes were made. Since there was no spring hunt and other game was plentiful in eastern Idaho and western Wyoming in the fall, the hides may well have been the primary attraction of the buffalo country.
Those Shoshone and Bannock who did not follow the buffalo party carried on the fall hunt in southeastern Idaho, northern Utah, and western Wyoming. The elk and deer hunted could best be taken by small groups, hence hunting parties were not large and communal techniques were not necessary. Also, since these animals were scattered throughout the region and did not travel in the huge herds characteristic of the buffalo, the population had to spread out accordingly. Somewhat larger groups gathered to hunt antelope, but these were temporary aggregations. The actual size of the fall hunting groups is uncertain. One informant said that each consisted of about fifteen tipis, while another said that groups of two to four tipis were common. These smaller camp groups were known as nanogwa. Their size was said to have made them more vulnerable to attack than the somewhat larger concentrations.