“Upon rounding the corner in our canoes, a magnificent sight burst upon us…Rushing through a gap that clift rock exactly before us, the river, contracted from a grand stream, was pent up in a narrow gorge scarcely fifty yards (50m) in width. Roaring furiously through the rock bound pass, it plunged in a single leap of about 120 feet (40m) perpendicular into a dark abyss below”