To ribeiroantonio: icebergs
Hello Antonio, thanks for your comments, as for the icebergs, i have a theory, there are other glaciers in this National park that do have more icebergs from photos i've seen, but unlike the Perito Moreno those are floating glaciers, so it may happen that besides the ice falling from the wall, also sometimes big chunks of ice just break off and form an iceberg that starts floating around. The Perito Moreno instead is not floating as the ice goes down about 700m below the surface at the deepest part, so when pieces of the front wall break off they fall into the lake and get shattered into small pieces. I might be wrong but i think it makes sense if the San Rafael is floating too which i don't know
regards
Allen
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