we are live in denver. what are they saying about the possibility of predicting a tragedy like this?. the experts on rock formation that yosemite say as much as they learn after a big chunk of rock walls like this they don t know how to figure out or predict when it all happened. here is a park geologist. things are happening within the rocks and invisible to us. so after the rock follow kerr s we can see better what was going on after the fact. julie: a slab this size of a 36 building - - story building fell down below where gm and rachel were. fortunately there in their cash to be but jim and the that the hospital as the debris winter december
have been prevented. we are live in denver. what are they saying about the possibility of predicting a tragedy like this?. the experts on rock formation that yosemite say as much as they learn after a big chunk of rock walls like this they don t know how to figure out or predict when it all happened. here is a park geologist. things are happening within the rocks and invisible to us. so after the rock follow kerr s we can see better what was going on after the fact. julie: a slab this size of a 36 building - - story building fell down below where gm and rachel were. fortunately there in their cash to be but jim and the that the hospital as the debris winter december