Viedma Glacier is located in the undefined part of the limit between Chile and Argentina, in Argentinian legislature it is in Los Glaciares National Park[2] which was declared a World Heritage Site in 1981.

[3][4] in Chilean legislature part of it is in Bernardo O'Higgins National Park.

Chunks of ice fall off the terminus and float off into the lake, eventually melting.

[2] The dark parallel lines inside the white central mass of the Viedma Glacier show where the debris-filled moraines have become entwined within the center of the new glacial ice mass as it forms.

At right angles to the glacial moraines in the middle, crevasses, large, canyon-sized cracks, are apparent in the grey-brown ice that can be seen along the sides of the glacier.