 Between these high lands lie what is called the valley of the Wallamitte , the frequented haunts of innumerable herds of elk and deer... .In ascending the river the surrounding country is most delightful, and the first barrier to be meet with is about forty miles up from its mouth .Here the navigation is interrupted by a ledge of rocks, running across the river from side to side in the form of an irregular horseshoe, over which the whole body of water falls at one leap down a precipice of about forty feet, called the Falls.