Till about 1835 it was usually called by the Crow name, Seedskeedee.
By the time the third decade of the nineteenth century was fairly begun the trappers were crossing in considerable numbers from the headwaters of the Missouri and the Platte into the valley of the Colorado and the Columbia, and as early as 1824 one of the most brilliant figures of this epoch, General Ashley,* having previously organised a fur-trading company in St.Louis, then the centre of all Western commerce, had established himself in Green River Valley with a large band of expert trappers which included now famous names like Henry, Bridger, Fitzpatrick, Green, Sublet, and Beckwourth.

Provo (or Provost) was already encamped in Brown's Hole.

One of Ashley's principal camps was what they called the "rendezvous" (there were a great many French-Canadians engaged in the fur business, and hence numerous French words were in common use among the trappers of the period), just above "The Suck," on Green River.

This Suck was at the entrance to Flaming Gorge, as it has since been named.

Beckwourth says of this: "The current, at a small distance from our camp, became exceedingly rapid, and drew toward the centre from each shore." The river here narrows suddenly and attacks a high ridge.