Wyeth’s enterprise on the Columbia River was balked by the shipwreck of the vessel which was to supply him, and, after a fruitless winter at Fort Vancouver, he set out eastward with Francis Ermatinger of the Hudson’s Bay Company. Below the forks of the Snake they came up with Captain Bonneville. The Wyeth journal tells the story of their Jackson’s Hole passage via Teton Pass and the Hoback. He found “horse flies on the mountains ... buffalo in the bottom also mosquitoes.” Evidence of the recent trail of the “men of Dripps and Fontenelle” was observed, also the place where More and Foy were killed the year before. Of this passage Irving reports, No accident of a disastrous kind occurred, excepting the loss of a horse, which, in passing along the giddy edge of a precipice, called the Cornice, a dangerous pass between Jackson’s and Pierre’s Hole, fell over the brink, and was dashed to pieces. On the 13th of July [1833], Captain Bonneville arrived at Green River.... [Illustration: Fort Bonneville site, on Horse Creek near its junction with Green River. Photo by Author] [Illustration: Section of “Map of the Rocky Mountains” by Washington Hood, Corps of Topographical Engineers, 1839. Data by William Sublette and others. Records of the War Department, National Archives.] [Illustration: Trapper type—American.] [Illustration: BULLET MOLD] VII. “The Fire Hole”: Era of the American Fur Company, 1833-1840 By 1832 only fragments of the Yellowstone Park area had apparently been explored, notably the Lake region. According to Warren A. Ferris, one of the great geyser basins was visited in the spring hunt of 1833 by a party of forty men under a Spaniard named Alvaris (or Alvarez). They reached the area by going up Henry’s Fork, later returning to Green River for the rendezvous. This is the first concrete evidence of white men in the Firehole Basin. The discoverer may have been Manuel Alvarez, United States consul at Santa Fe from 1839 to 1846, who figures prominently in Josiah Gregg’s journal. The rendezvous of 1833 was held at Bonneville’s fort on Horse Creek, tributary of Green River, near Daniel, Wyoming. The St. Louis supply caravan of the Rocky Mountain Fur Company, led by Robert Campbell, included young Charles Larpenteur, who wrote in his journal of a side trip through Jackson’s Hole: The day after we reached the rendezvous Mr. Campbell, with ten men, started to raise a beaver cache at a place called by the French Trou a Pierre, which means Peter’s Hole. As I was sick Mr. Campbell left me in camp, and placed Mr. Fitzpatrick in charge during his absence, telling the latter to take good care of me ... after seven or eight days Mr. Campbell returned with ten packs of beaver.