There’s a long burning mine fire in Pennsylvania that would probably seem like a literal Hell, not that anything living could survive in it for long even with the kind of equipment volcano scientists use. Be interesting to send in some properly designed drones to see what is actually going on down there.
Jimsouth, I know exactly where you are talking about. I don’t live real far from you (Reading). I don’t know how far that vein goes, but these Flamers could be used to monitor is progress.