Drumheller Channels
National Natural Landmark
Photo of Drumheller Channels
(extends into Grant County) Drumheller Channels are the most spectacular example in the Columbia Plateau biophysiographic province of "butte-and-basin" scabland; an erosional landscape characterized by hundreds of isolated, steep-sided hills surrounded by a braided network of underfit channels. It illustrates the dramatic modification of the Columbia Plateau volcanic terrain by late Pleistocene catastrophic glacial outburst floods. These floods occurred at a scale remaining unparalleled on earth, either in the geologic record or in historical account. Ownership: Federal, State, private.
DESIGNATION DATE
1986