What are these features?

Boyd

Boyd

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Looking at agricultural areas on the LIDAR is pretty interesting, have not spent much time doing that. But looking quickly now, most of the farmland as well as the "alphabet soup" rye strips shows parallel lines from mowing/cultivation. You can see that here (near the Hammonton airport).

https://boydsmaps.com/#17.00/39.659693/-74.746706/midatlidar/0.00/0.00

But the field where the crosshairs are centered shows more of a grid pattern. Look back through the aerials and you will see it was once a field similar to the others but has gradually grown over. For example, look at the 1995 vs 2000 aerials. I'm wondering if that is actually a plantation/nursery? Would that result in a more grid-like pattern?

Are there examples of blueberry or corn fields that have a grid pattern vs parallel lines?
 
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GermanG

GermanG

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I was referring to the site at Washington. No idea on the other ones. All the past and present blueberry fields I've seen on aerials appear as lines rather than grids however.
 
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Boyd

Boyd

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pinelandpaddler said:
Two two locations I linked to are the only two that I've found that have this grid pattern.
Click to expand...

I'm seeing it in overgrown areas bordering developments, for example

https://boydsmaps.com/#17.00/39.860319/-74.754612/midatlidar/0.00/0.00

Screen Shot 2023-08-29 at 12.43.13 PM.png


https://boydsmaps.com/#17.00/39.860319/-74.754612/pines1995/0.00/0.00

Screen Shot 2023-08-29 at 12.46.12 PM.png


Could this be the result of levelling an area with bulldozers or other heavy equipment? Maybe a tree farm or re-forestation project, where where they plant lots of little saplings in a grid pattern?
 
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Boyd

Boyd

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I think they're all over the place, if you look for them! :) This one is interesting, looking all the way back through the aerials, it just appears to be a wooded area. But on the 1930's aerials, it looks sort of like an old field.

https://boydsmaps.com/#17.00/39.595866/-74.780861/midatlidar/0.00/0.00

Screen Shot 2023-08-29 at 12.58.48 PM.png


I'm thinking these are old tree farms/nurseries.
 
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pinelandpaddler

pinelandpaddler

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Boyd said:
I think they're all over the place, if you look for them! :) This one is interesting, looking all the way back through the aerials, it just appears to be a wooded area. But on the 1930's aerials, it looks sort of like an old field.

https://boydsmaps.com/#17.00/39.595866/-74.780861/midatlidar/0.00/0.00

View attachment 20689

I'm thinking these are old tree farms/nurseries.
Click to expand...
You are no doubt correct about this location. Here are some other examples: https://boydsmaps.com/#18.00/39.632185/-74.688277/midatlidar/0.00/0.00

Take a look at the 1977 aerials and it becomes obvious that these are tree nurseries. I'm not so sure about the locations I linked to in the OP. I should have said, "the two locations I linked to are the only two that I've found that have this specific grid-like pattern."


mystery grid.png


There are some differences that may or may not be significant. In the location above, note that the "modules" in the "grid" are significantly larger. Also note that much of this location was deforested in the 1931 aerial. By 1951, many trees had grown, but not in a way corresponding to the "grid."
 
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Teegate

Teegate

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I suspect the house for the farm at Hawkins Bridge is the large cellar hole right along the road at the top of the hill.

NJPineBarrens Maps

maps.njpinebarrens.com

The features at Washington most likely is the Sooy properties N.P. Sooy, P.S. Sooy Job W. Sooy had three lots at 10.5177 acres, 15.6947 acres and 4.4115 acres.The property stones were still there when Wharton was purchased. I went there years ago after a very crispy fire where all you could see was dirt and I did not find the stones.
 
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pinelandpaddler

pinelandpaddler

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Teegate said:
I suspect the house for the farm at Hawkins Bridge is the large cellar hole right along the road at the top of the hill.

NJPineBarrens Maps

maps.njpinebarrens.com

The features at Washington most likely is the Sooy properties N.P. Sooy, P.S. Sooy Job W. Sooy had three lots at 10.5177 acres, 15.6947 acres and 4.4115 acres.The property stones were still there when Wharton was purchased. I went there years ago after a very crispy fire where all you could see was dirt and I did not find the stones.
Click to expand...
Guy, do you think the features I am looking at near Hawkin Bridge are remnants of the farm?
 
Teegate

Teegate

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pinelandpaddler said:
Guy, do you think the features I am looking at near Hawkin Bridge are remnants of the farm?
Click to expand...

I have never heard anyone mention what the ruins were along the road south of Hawkin's bridge and I know there were other farms south of that location. I would think you are correct.

Did you notice a somewhat similar disturbance south of there at the Godfrey Estlow property?


ge.jpg
 
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Boyd

Boyd

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pinelandpaddler said:
@Boyd are these striations artifacts or are they really there? They don't show in the Mid-Atlantic Lidar
Click to expand...
That's some kind of artifact, probably the result of the workflow I used when creating that map. That was one of my first 3d maps using the MapBox API and I didn't quite understand a couple of the finer points (you need to figure it all out for yourself, they don't support making you own maps with your own data).

If you want to see the most accurate representation, use the terrain viewer. It creates a new map from my improved dataset every time and you can further explore by changing the lighting and using 3d view. I don't see any grid patterns here.

https://boydsmaps.com/terra/#39.708.../-2000/1296/-2000/40.25/5/2d/shader10/0/0/z17
 
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wolfspider05

wolfspider05

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This map shows a cabin in the vicinity of where Hawkin bridge would be I believe. I too have wondered what the cellar hole was. Lots of references to Tulpenhawkin (spelled in numerous variations) in old texts and deeds. References to a mill dating back to the 1700s, but information is few and far between.
 

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