<p>Walking on tundra at Sentry Island.
</p><p>The entire island is a long, low sandy esker (an in-glacier river bed) atop of glacial tills reworked by the marine beaches falling out of Hudson Bay. An esker is an in-glacier river during the melting of all that ice. The eskers hereabouts, like the continental glacier, flowed from west to east into Hudson Bay. The photo faces west or "up-stream" and "up-ice". The horizon is the mainland.
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The land hereabouts is still rising from the release of the weight of continental ice melted 8,000 to 10,000 years ago.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/31856336@N03">Mike Beauregard</a> from Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/31856336@N03/5938702722/">Beautifully Barren</a>