Even the carbon underground burns in some cases. https://en.m.wikipedia.org/wiki/Coal-seam_fire https://en.m.wikipedia.org/wiki/Coal-seam_fire Hopefully the r

Even the carbon underground burns in some cases. https://en.m.wikipedia.org/wiki/Coal-seam_fire https://en.m.wikipedia.org/wiki/Coal-seam_fire Hopefully the really deep stuff doesn't have the oxygen available to combust.