Before we had reported on some big tube-shaped holes opening up around Siberia and other places that had to do with methane.
Scientist, Guy McPerson says these methane releases are a dire warning sign for human life on the planet – at the 26 min. mark –
LINK – https://youtu.be/nD1gw2d24DQ
Possibly related –
Strange Sounds – Canal completely drained after huge 100ft wide sinkhole opens up just feet from a boat in Cheshire, UK
The Louisiana Sinkhole Bugle 