Flip Nicklin / Cruise ship near glacier, Alaska

Ingo Arndt / Terminal moraine of Nordenskjold Glacier and Allardyce Range, South Georgia Island

Ingo Arndt / Nordenskjold Glacier with Allardyce Range, South Georgia Island

Matthias Breiter / Terminal moraine and glacial lake, Mendenhall Glacier, Juneau, Alaska

Matthias Breiter / Hubbard Glacier encroaching on Gilbert Point, Wrangell-St. Elias National Park, Alaska

Matthias Breiter / Hubbard Glacier encroaching on Gilbert Point, Wrangell-St. Elias National Park, Alaska

Ingo Arndt / Terminal moraine of Nordenskjold Glacier and Allardyce Range, South Georgia Island

Ingo Arndt / Terminal moraine of Paget Glacier, South Georgia Island

Hiroya Minakuchi / Glacier showing lateral, medial, and terminal moraine in glacial valley, Alaska

Colin Monteath / Cerro Torre, left, and Fitzroy seen from Loma Pelique Tumbado, with evident terminal moraine, Los Glaciares National Park, Patagonia, Argentina

Flip Nicklin / Terminus of glacier entering bay, Alaska

Colin Monteath / Glacial terminal moraine, Paradise Bay, Antarctic Peninsula, Antarctica