about one mile long. The total thickness is probably upwards of 600 feet. The Cretaceous beds rise upwards in the cliff at least 600 feet where they are overlain by basalt to a height upwards of 3000 feet. The clip of the basalt appear to be the same as the Cretaceous. From 600 feet up to 1200 there is a talus slope of basalt and then the basalt rises in a perpendicular cliff to near the top. In numerous places are screes. These have generally curved slopes or steps with the same contour. The ones around this camp is a grand one. Snow lies in all the hollows and the sloping ledges. The latter are quite constant over long distances so that many horizontal lines of snow appear broken through by the ravine. In some places small streams come down this perpendicular face like the Yosemite. Some are lost before they reach the bottom and are only discernable as dark streaks down the basalt face. The vegetation is very scanty in this region but back of our camp is a small stream bed where old peach trees are still present. The creeping willow is everywhere with here and there bunches of