B.Nichardson 34 55 General Account show unmistakable and perfect evidence of glacial polish. Much of this floor is covered with large boulders "erratics". The little ridges and walls are interesting. None of them are over 100 ft high but the interesting fact lies in that they all run in an east west direction. They are of course not continous being broken up by the streams, lakes and the larger ridges forming at the edges of the valley. The high mountains forming an almost complete ring around the valley give one an idea of a large amphitheater. From Lake S.A. we went east to the three lake situated just below Lake S.A. and skirting these, and thence to the trail down the canyon or valley to camp.