Gavin Hellier / Wenkchemna Peaks or Ten Peaks rising over Moraine lake in the snow, near Lake Louise, Banff National Park, Alberta, Canada, 2007

Gavin Hellier / Wenkchemna Peaks or Ten Peaks rising over Moraine lake in the snow, near Lake Louise, Banff National Park, Alberta, Canada, 2007

Olga Kamenskaya / Lake on the moraine, Katunsky glacier, Russia. July 2019.

Doug Gimesy / Konig glacier and proglacial lake, viewed across moraine, panorama. Fortuna Bay, South Georgia. November 2018. Digitally stitched image.

Rhonda Klevansky / Circle of moraine and volanic dust in ice of O'Higgen glacier, Bernado O'Higgens National Park, Patagonia, Chile. January 2017.

Rhonda Klevansky / Circle of moraine and volanic dust in ice of O'Higgen glacier, seen from a boat on O'Higgens Lake. Bernado O'Higgens National Park, Patagonia, Chile. January 2017.

Rhonda Klevansky / Circle of moraine and volanic dust in ice. O'Higgen glacier, viewed from O'Higgens Lake, Bernado O'Higgens National Park, Patagonia, Chile. January 2017.

Ashley Cooper / Lateral Moraine with walkers doing the Tour du Mont Blanc. on the side of the rapidly retreating Glacier de Miage below Mont Blanc, Italy, August 2014

Ashley Cooper / People in canoes on Moraine Lake in the Canadian Rockies, Banff National Park, Canadian Rockies, Alberta, August 2012.

Ashley Cooper / Moraine Lake, Banff National Park, Alberta, Canada, August 2012.

Ashley Cooper / Man looking out over Moraine Lake in the Banff National Park, Alberta, Canada, August 2012.

Ashley Cooper / Moraine Lake, Banff National Park, Alberta, Canada, August 2012.

Ashley Cooper / Moraine Lake, Banff National Park, Alberta, Canada, August 2012.

Ashley Cooper / Moraine from the rapidly receding Victoria Glacier above Lake Louise in the Canadian Rocky Mountains, Canada. August 2012.

Ashley Cooper / Meltwater pools and tourist buggy on the Athabasca glacier,which has lost 60 percent of its ice in the last 150 years. Rocky Mountains, Alberta, Canada. August 2012.

Visuals Unlimited / Glacially-fed Moraine Lake, Alberta, Canada

Gavin Hellier / Wenkchemna Peaks or Ten Peaks rising over Moraine lake in the snow, near Lake Louise, Banff National Park, Alberta, Canada, 2007

Gavin Hellier / Wenkchemna Peaks or Ten Peaks rising over Moraine lake in the snow, near Lake Louise, Banff National Park, Alberta, Canada, 2007

Gavin Hellier / Canoes on jetty covered in early winter snow, Valley of the Ten Peaks, Moraine Lake, Banff National Park, Rocky Mountains, Alberta, Canada, 2007

Gavin Hellier / Canoes on jetty covered in early winter snow, Valley of the Ten Peaks, Moraine Lake, Banff National Park, Rocky Mountains, Alberta, Canada, 2007

Gavin Hellier / Wenkchemna Peaks over Moraine lake in the snow, Banff-Jasper National Parks, Alberta, Canada, 2007

Oriol Alamany / Mountain forest reflections on Moraine Lake, Banff National Park, Rocky Mountains, Alberta, Canada

Alan Watson / Glacial moraine with a small tarn and conifer forest and the Rockwall behind, Kootenay National Park, British Columbia, Canada. World Heritage Site July 2007

Eric Baccega / Moraine Lake, Valley of the Ten Peaks, Banff National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Mountains reflected in Moraine Lake, Valley of the ten Peaks, Banff National Park, Rocky Mountains, Alberta, Canada, September 2009

Rob Tilley / Lake Moraine at first light, Banff National Park, Alberta, Canada

Jabruson / View from Moraine Hut onto Lac Gris, Ruwenzori Mountains, Mountains of the moon, Virunga NP, Democratic Republic of Congo (formerly Zaire)

Yva Momatiuk & John Eastcott / Perito Moreno Glacier, Argentine Lake, Los Glaciares National Park, Patagonia, Argentina

Yva Momatiuk & John Eastcott / Perito Moreno Glacier and peaks Argentine Lake, Los Glaciares National Park, Patagonia, Argentina

Chase Dekker / Mountains reflected in glacial lake, Moraine Lake, Banff National Park, Alberta, Canada

Chase Dekker / Hikers near glacial lake, Moraine Lake, Banff National Park, Alberta, Canada

Chase Dekker / Glacial lake and mountains, Moraine Lake, Banff National Park, Alberta, Canada

Chase Dekker / Glacial lake and mountains, Moraine Lake, Banff National Park, Alberta, Canada

Chase Dekker / Peaks at sunrise, Moraine Lake, Banff National Park, Alberta, Canada

Chase Dekker / Glacial lake and mountains, Moraine Lake, Banff National Park, Alberta, Canada

Yva Momatiuk & John Eastcott / Ice calving off glacier, Lake Argentino, Los Glaciares National Park, Patagonia, Argentina

Peter Mather / Lowell Glacier and Alsek Lake, Kluane National Park, Yukon, Canada

Matthias Breiter / Moraine Lake in the Valley of the Ten Peaks, Banff National Park, Alberta, Canada

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

Theo Allofs / Glacier showing medial moraines and glacial lake, Katmai, Alaska

Theo Allofs / Aerial of glacier showing medial and end moraines with glacial lake, Katmai, Alaska

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

Tim Fitzharris / Panoramic view of Wenkchemna Peaks and Moraine Lake, Valley of Ten Peaks, Banff National Park, Alberta, Canada

Tim Fitzharris / Wenkchemna Peaks reflected in Moraine Lake, Valley of Ten Peaks, Banff National Park, Alberta, Canada

Tim Fitzharris / Moraine Lake in the Valley of Ten Peaks, Banff National Park, Alberta, Canada

Tim Fitzharris / Wenkchemna peaks and moraine lake, Banff National Park, Alberta, Canada

Jim Brandenburg / Glacier flowing between the Chigmit Mountains showing glacial valley, medial and lateral moraines, Lake Clark National Park and Preserve, Alaska

Yva Momatiuk & John Eastcott / Perito Moreno Glacier and peaks Argentine Lake, Los Glaciares National Park, Patagonia, Argentina