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Posted by ⚡Survenator⌁ on September 22, 2013 at 7:44pm
The bolt in this Central Park rock is believed to be one of the original survey bolts from when the city grid was first planned in 1811. Led by John Randel, surveyors had the task of marking each future street intersection aligned with the grid. They used marble monuments or iron bolts where there was exposed bedrock. The bolts bore a cross across the top. Very few of these markers exist anymore. Most were removed as roads and intersections were built. However, Central Park was not a part of the original plan for the city, known as The Commissioners’ Plan of 1811, so street intersection points may have been marked according to the grid, and left to remain since no intersection was actually built here. This bolt is known to be in the park, but the exact location is kept a secret for fear that it will be stolen or destroyed. After some intense searching of both the internet and park, you might be able to find it like I did. Source: http://untappedcities.com/2013/05/21/untapped-secrets-of-central-park-not-according-to-plan/Read more…
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Survey Photos by Tag or CategoryEarth's Largest Survey Photos Collection
Since 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.
Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.
Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.
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