National Geographic : 1971 Oct
The glassy span slowly spreads from bank to bank (right), a link in the road carved in 1968-69 between Fairbanks and the North Slope. Spring revealed the price of careless construction: Uncovered permafrost along the bulldozed route thawed into an impassable trench. (RIGHT) BY W. E . GARRETT;KODACHROMEBY EMORYKRISTOF© N.G.S .