For more information: http://www.nasa.gov/topics/earth/features/grover.html

Mark Robertson, a graduate student at Boise State University, checks the depth of the snow pack just after GROVER passes. The pole has graduated markings along its length. Mark is checking the depth of the ice layer formed after the big melt of summer 2012. For more information: www.nasa.gov/topics/earth/features/grover.html

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