This morning they gave the news in TV also here, about that hole ..... in the helicopter made video, there was shown clearly that the hole is going not just straight down, but also laterally (mean, the hole is much more large at the bottom, than at the top) ..... they said that the terrain is still falling from hole sides, and that they want to evacuate all the zone around ..... speaker said the hole is at least 60 meters deep, but none said nothing about the cause of this, not yet at least .....
Also, they said that there was a big building with peoples, where the hole is ..... and they're "searching for victims" (also if i can be surprised if after a similar fall, they can find anything).