it was captured a couple weeks ago but recently unloadeded to live science. if you notice this glacier is forming a bridge. >> is that rare for a glacier to form an ice bridge like that? >> it connects to an arm of one of the lakes in argentina making it extremely rare that it could form that bridge. so these guys are just there watching in awe. admiring the view. keep watching. all of a sudden the glacier starts to move. it bits and pieces start to fall. >> oh, boy. it ruptures and -- >> oh. the whole bridge collapsed. >> the whole thing collapses into this arm of the lake. >> isn't that spectacular? >> and to be there when that happens. that's -- boy. how are you in the right place at the right time. you would have to sit there with a video camera forever. >> that's awesome. >> that thing collapses. like the glacier did something, just chunks of ice falling into the water. >> it's massive and this has been here thousands of years. >> how crazy if you are lucky enough to see a rare ice bridge on a glacier and on top of it you watch the ice bridge then collap