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Avebury & the Marlborough Downs

Anyone know what this is?

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tjj T
tjj Feb 5, 2016 15:22:38
Replying to juamei

juamei wrote:
I was studying a zoomed in version of the LIDAR for the avebury area I posted yesterday and spotted this:

https://houseprices.io/lab/lidar/map?ref=SU1183869019
https://www.google.co.uk/maps/@51.420065,-1.8311421,387m/data=!3m1!1e3

Checked the Wiltshire HER and it doesn't seem to have been noted. I thought it might be a crop circle as there is one visible on the LIDAR to the North East of Avebury, but there it is on a google maps satellite image as well.

As you say Juamei, it is probably the 'ghost' of a crop circle - they seem to stay in the landscape for quite a while after the crop has gone.

T thesweetcheat
thesweetcheat Feb 5, 2016 18:08:25
Replying to tjj

Years ago at work I was told of an incident where the Ordnance Survey using aerial photography picked up an apparent boundary feature running diagonally across a garden, which they showed on their updated version of the large scale map.

This sparked consternation from the landowner and when it was investigated by a surveyor on the ground, it turned out that the "boundary" was actually a washing line hung with sheets on the day the plane flew over.

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