Map what's on the ground! Posted by marczoutendijk on 24 September 2015 in English. Last updated on 16 March 2017. This is a perfect example of our first rule, “map what is on the ground”: . You can find it here: Read more here.
OpenStreetMap
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Comment from Vincent de Phily on 25 September 2015 at 10:42
Well, maybe. The artwork is effectively both there and not there. You can’t be sure until you survey it, and different surveyors might reach different conclusions.