 Here they descended the Hoback River to its junction with the Snake River and crossed Teton Pass to the abandoned Fort Henry, arriving October 18, 1811.Knowing that they were now on the headwaters of the Columbia, the party anticipated the majority of their struggles to be over, and Hunt yielded to the desires of his men to abandon the horses and embark downstream by canoe.This was a fateful decision as the course of the Snake River later proved to be completely unnavigable by canoe, forcing the party to travel by foot and causing the men to endure severe hardship.