Ten-foot piece of frozen ground lodged against the upstream side of Army bridge across the Donjek River; Swamp crossed by road on borrowed fill. Original caption: 43-3981. A ten-foot piece of frozen ground lodged against the upstream side of the Army bridge across the Donjek River. Often these floating pieces, which dropped into the stream from "cut banks" on the west shore up the river were 40 ft. long. The dark areas of "Drift" consists of frozen silt, moss and decomposed vegetation and the light portion is a pumice-like volcanic deposit which was found in abundance in this neighborhood. Sec

Ten-foot piece of frozen ground lodged against the upstream side of Army bridge across the Donjek River; Swamp crossed by road on borrowed fill. Original caption: 43-3981. A ten-foot piece of frozen ground lodged against the upstream side of the Army bridge across the Donjek River. Often these floating pieces, which dropped into the stream from "cut banks" on the west shore up the river were 40 ft. long. The dark areas of "Drift" consists of frozen silt, moss and decomposed vegetation and the light portion is a pumice-like volcanic deposit which was found in abundance in this neighborhood. Section B2. Army Strip Map Milepost 231. August 15, 1943. Photo by Pinkstaff. Original caption: 43-3982. A "niggerhead" swamp crossed by this borrowed fill constructed by Utah Construction Company. Here all vegetation was removed and deep ditches were dug for drainage purposes. The bulk of the water in the ditches is not from precipitation but is a result of thawing of frozen ground after nature's insulation has been removed. Section B2. Milepost August 15, 1943. Photo by Pinkstaff. State: Alaska.

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