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Strange Lidar Markings

Posted: Mon Apr 15, 2019 10:01 pm
by eldraw
The land i have just received permission to detect on is next to an old Manor and seems to have three strange shapes on the lidar?

One looks to be an outline of a building and there are two strange patterns near it, the farmer has no idea what they could be.

Am i reading to much into this and could these marks just be natural?

Thanks in advance ::g


Re: Strange Lidar Markings

Posted: Mon Apr 15, 2019 10:09 pm
by Bargeman
They look like old field boundaries to me ::g



BM [:)

Re: Strange Lidar Markings

Posted: Mon Apr 15, 2019 10:18 pm
by eldraw
Bargeman wrote:
Mon Apr 15, 2019 10:09 pm
They look like old field boundaries to me ::g



BM [:)
Thought i was getting a little too excited :D

Thanks for looking ::g

Re: Strange Lidar Markings

Posted: Mon Apr 15, 2019 10:33 pm
by littleboot
The bottom left looks interesting. Field boundaries, yes....but these are quite close together and possibly indicate smaller enclosures near a building.

Re: Strange Lidar Markings

Posted: Mon Apr 15, 2019 10:48 pm
by Easylife
Maybe the 'patterns' are just tractor marks in the crop? x;

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 7:10 am
by Silvercoin
yes bottom left looks like house and field enclosure 👍

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 8:46 am
by Zyrbalax
Old field boundaries are interesting - detectorists often go round the existing boundaries, but how many will have known exactly where the old boundaries were? Modern tech like Lidar gives us an information edge over people who may have detected the land before us.

Perhaps not as exciting as it might have been, but I'd still focus on those areas and see what pops up.

Good luck - hope you find some goodies!

Z

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 10:33 am
by Junior
Lidar......being thick and the first time I've used it.... it hasn't shown some scheduled land I know of I assume it won't show u anywhere of real documented interest ???, cheers :D

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 2:01 pm
by Koala
bottom left is the only one I would be getting exited about.

I guess the large straight one across the middle is a track that's still there on the ground

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 2:34 pm
by littleboot
You need to check the oldest online maps you can find against the lidar and that will throw some light on quite a lot of these markings....fields were generally smaller back in the day. The fact you mention a manor house nearby is interesting because I've had permissions in England, and now have some in Normandy, where the 'manor' or main farm has moved about. They didn't go to the bother of rebuilding on the same spot....that would mean complete demolition. They tended to choose another spot a few hundred yards in any direction and then rob out the old building as and when they needed the materials for the new one. So, the bottom left markings could indicate an earlier version of the existing manor. Whatever, I'd lay odds there was a reasonable sized building there.
There is only one way to find out, Private Eldraw. Shoulder arms and quick march over there and have a bash. :D

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 3:57 pm
by WVAM
As LB has said - check out some old maps and you can do worse than start here https://www.old-maps.co.uk/#/

Also check Google Earth historical view to see what's been happening with crops.

And not sure if this picture helps but it looks like there's more going on bottom left:

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 9:37 pm
by eldraw
littleboot wrote:
Tue Apr 16, 2019 2:34 pm
You need to check the oldest online maps you can find against the lidar and that will throw some light on quite a lot of these markings....fields were generally smaller back in the day. The fact you mention a manor house nearby is interesting because I've had permissions in England, and now have some in Normandy, where the 'manor' or main farm has moved about. They didn't go to the bother of rebuilding on the same spot....that would mean complete demolition. They tended to choose another spot a few hundred yards in any direction and then rob out the old building as and when they needed the materials for the new one. So, the bottom left markings could indicate an earlier version of the existing manor. Whatever, I'd lay odds there was a reasonable sized building there.
There is only one way to find out, Private Eldraw. Shoulder arms and quick march over there and have a bash. :D
littleboot wrote:
Mon Apr 15, 2019 10:33 pm
The bottom left looks interesting. Field boundaries, yes....but these are quite close together and possibly indicate smaller enclosures near a building.
Thank you for the advice, im currently looking at old maps of the area but there does not seem to be any field boundaries that match.

Im going to site this weekend and will report back if i find anything interesting, cheers! ::g

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 9:38 pm
by eldraw
WVAM wrote:
Tue Apr 16, 2019 3:57 pm
As LB has said - check out some old maps and you can do worse than start here https://www.old-maps.co.uk/#/

Also check Google Earth historical view to see what's been happening with crops.

And not sure if this picture helps but it looks like there's more going on bottom left:
Thank you for the advice, you really made the details pop out on the picture, could i ask how you managed it?

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 9:39 pm
by eldraw
Koala wrote:
Tue Apr 16, 2019 2:01 pm
bottom left is the only one I would be getting exited about.

I guess the large straight one across the middle is a track that's still there on the ground
Yes the straight line is the track between the fields at present. ::g

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 9:40 pm
by eldraw
Zyrbalax wrote:
Tue Apr 16, 2019 8:46 am
Old field boundaries are interesting - detectorists often go round the existing boundaries, but how many will have known exactly where the old boundaries were? Modern tech like Lidar gives us an information edge over people who may have detected the land before us.

Perhaps not as exciting as it might have been, but I'd still focus on those areas and see what pops up.

Good luck - hope you find some goodies!

Z
Many thanks, will report back any finds! ::g

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 10:51 pm
by WVAM
eldraw wrote:
Tue Apr 16, 2019 9:38 pm
WVAM wrote:
Tue Apr 16, 2019 3:57 pm
As LB has said - check out some old maps and you can do worse than start here https://www.old-maps.co.uk/#/

Also check Google Earth historical view to see what's been happening with crops.

And not sure if this picture helps but it looks like there's more going on bottom left:
Thank you for the advice, you really made the details pop out on the picture, could i ask how you managed it?
This is on a Mac but I assume PC's have a similar function. Open the image in 'preview' - it's the default on Macs. Go to 'Tools' and click 'Adjust Colour' then have a play with the settings. The main ones are exposure, contrast and sharpness. The image below shows you what comes up on screen.

Re: Strange Lidar Markings

Posted: Tue Apr 16, 2019 11:08 pm
by Rivers rat
Nascar line 2 :D :D :D :D


RR

Re: Strange Lidar Markings

Posted: Wed Apr 17, 2019 2:40 am
by Easylife
eldraw wrote:
Tue Apr 16, 2019 9:39 pm
Koala wrote:
Tue Apr 16, 2019 2:01 pm
bottom left is the only one I would be getting exited about.

I guess the large straight one across the middle is a track that's still there on the ground
Yes the straight line is the track between the fields at present. ::g
No doubt following a previous field boundary. :D

Re: Strange Lidar Markings

Posted: Wed Apr 17, 2019 2:43 am
by Easylife
Maybe your best bet is to get down to your main library and take some pics of the 1700's Tithe maps? ::g

Re: Strange Lidar Markings

Posted: Wed Apr 17, 2019 11:07 am
by Pete E
Easylife wrote:
Wed Apr 17, 2019 2:43 am
Maybe your best bet is to get down to your main library and take some pics of the 1700's Tithe maps? ::g
Or just go out and detect, starting at the bottom left field?

Re: Strange Lidar Markings

Posted: Wed Apr 17, 2019 12:56 pm
by Koala
I was thinking about where my finds have come from.

A lot of the mundane finds come from old field boundaries and so on.

But most of the nicer finds have been fairly random

Re: Strange Lidar Markings

Posted: Wed Apr 17, 2019 1:29 pm
by Easylife
Pete E wrote:
Wed Apr 17, 2019 11:07 am
Easylife wrote:
Wed Apr 17, 2019 2:43 am
Maybe your best bet is to get down to your main library and take some pics of the 1700's Tithe maps? ::g
Or just go out and detect, starting at the bottom left field?
Sure, but it would also be useful to find out what feature was actually there and when it dated to. ::g