This video from 2012 has been circulating again online, and there are still no explanations for it. It shows a field in England, covered by a mysterious web.

Over at Doubtful News, Sharon Hill says she hasn't yet come up with a definitive answer. One thing she's sure about, though, is that the person who posted the video has the world's most bizarre explanation. Here it is:

ChemTrail web formation 08-10-2012 at Rossington Allsaints school following first fog of the autum .The downward path of the web is evident in that the lamp posts have it on the top and it has draged down with the weight of the blanket until settling with any raised plants being covered from the top down .Deffinatly not cobwebs as the area covered is around 10,000sqmtrs and can be followed across fields in a SW direction for miles .Checked for any Gamma radiation due to solar activity shield idea but none present , At 60x mag under microscope the fine hairlike structure is evedent , my theory is that they are released and cover and rise after release in the atmosphere then fall and dry out and simply come down as dust particles , except when a fog is present where they reform into a blanket that shows up on the ground .As when the sun heats it or indeed where warmer tarmac is encounted they dry out rapidly and vanish ? Hence on the video where the concrete is in the grass no web formation is evident , as indeed it is around the field area that is encircled by a road .And village wide , the southern end has the most evidence with the northern end showing hardly any to none at all .The fields between the village and Tickhill being covered as is the school field , With the fields at Harworth also being covered , so it is around 5 miles wide and 15 to 20 miles long ?? Conclusion – They have fallen as a dust and recombined into the high altitude blanket at ground level due to the moisture content of the fog.

Oh well that makes perfect sense. Read more on YouTube.