Note that collapses of this glacier are common. The end of the glacier split a lake in two parts, and water accumulates on one side and after 2 or 3 years the difference of level breaks the glacier and there is a major collapse. It's impressive, but I never had seen it myself.<p>IIUC this is a minor collapse that are more common, but the strange part is that a big chunk of ice that was underwater raised to the surface.<p>More info: <a href="https://en.wikipedia.org/wiki/Perito_Moreno_Glacier" rel="nofollow">https://en.wikipedia.org/wiki/Perito_Moreno_Glacier</a><p>A video of the big collapse: <a href="https://www.youtube.com/watch?v=_EjSJGETwKA" rel="nofollow">https://www.youtube.com/watch?v=_EjSJGETwKA</a>