Could that be a radar retroflector for ships and or aircraft?Thanks for sharing! I love the different perspective your adventures bring!
Can you tell me about this? What am I looking at?
Cheers!
Could that be a radar retroflector for ships and or aircraft?
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That is a trig point, used to reference locations and distances.
It's basically what we call a survey marker in the US.
https://en.wikipedia.org/wiki/Triangulation_station
In the US I am used to seeing those metal discs buried in concrete.
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