He led his party up the Colorado to a point just above the head of Black Canyon of the Colorado, to Las Vegas Wash, which Ives thought might be the Virgin River, but had doubts because it seemed too small.
He led his party up the Colorado to a point just above the head of Black Canyon of the Colorado and beyond to the vicinity of Fortification Rock. Next day, they went two miles farther to Las Vegas Wash, which Ives thought might be the Virgin River, but had doubts because it seemed too small.