A close up of the head of the Athabasca Glacierand the river of ice, Athabasca Glacier, Canada.

A close up of the head of the Athabasca Glacier and the river of ice, Athabasca Glacier, Canada.

A close up of the head of the Athabasca Glacier and the river of ice, Athabasca Glacier, Canada. Note the fissures showing extreme pressures on the ice in the accumulation zone.

A close up of the head of the Athabasca Glacier and the river of ice, Athabasca Glacier, Canada. Note the fissures showing extreme pressures on the ice in the accumulation zone.

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