Associate professor Margaret Darrow, right, reads data from a weather station installed on one of several frozen debris lobes which have appeared along the Dietrich River valley in the southern Brooks Range. Darrow, along with state geologists Ronald Daanen, left, and Trent Hubbard, are trying to figure out how to slow down or stop the movement of the lobes which threaten the Dalton Highway and the nearby trans-Alaska pipeline.
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