Gray Rubble on Mauna Kea
May 1, 2012
Gray rubble on the flanks of Mauna Kea, located on the island of Hawaii, lie in contrast to the red volcanic rock behind them. The rubble was deposited there by a glacier that disappeared thousands of years ago. Studies of this material have added to the knowledge of climate phenomena during that time period. (Date of Image: 2009)
Credit: Oregon State University
