Proof video of smoke ring similar to some ufo seen in other sightings

October 31, 2011

Mount Ruapehu, North Island, NZL

Even if this sighting has most probably nothing to do with an unidentified flying object, we must keep this and look at it very closely. This kind of smoke heat phenomena has happened before: 1957 Fort Belvoir USA and also in 1974 Viborg Denmark but they were not related to volcano ? So if this actual video showing this incredible ring of smoke coming out of the Mount Ruapehu volcano is almost debunkable what was the heat source of the other smoke UFO sightings ?