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Quartz pebble conglomerate boulder on crow island III. Glacial polish preserved on the underside of the boulder. Note camera case for scale. Boulder is sitting in a semi-circular depression on a level 2 surface. | |
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Quartz pebble conglomerate boulder on crow island III. Glacial polish preserved on the underside of the boulder. Note camera case for scale. Boulder is sitting in a semi-circular depression on a level 2 surface. | |