Black and white image showing construction on the Ariel Dam. In the distance are trees along the top of the hillside. In the upper right of the picture is a wooden structure consisting of scaffolding and a building with wooden steps leading down from it. This structure is on a dirt hillside leading down to a body of water. At the base of the steps is an autombolie from the 1920s. In the center of the image is a wooden building with some barrels stacked behind it. There are wires stretched across the image leading down to a hook that is being positioned by a construction worker. A fish truck is being constructed across the water in the lower part of the image. Ariel Dam is one in a string of huge power development units on the Lewis River. With its headwaters in the icefields on the western slopes of Mount Adams, the Lewis River flows westward through Gifford Pinchot National Forest to the western boundary of Skamania County. From there to the Columbia River, it represents the boundary between Cowlitz County and Lewis County.