Massive sinkhole opens up after mine collapse CNN 0 89 06.28 00:52 https://www.youtube.com/watch?v=XDOILiYN_A4 + 1 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 1 Massive sinkhole opens up after mine collapse