After I checked that aswell, I continued to a central substation that the two powerlines were originating from, because there was a powerline that was terminating really close to the substation but not within.
Sometimes the powerlines aren't visible at all from imagery, so it was really difficult to spot out where the powerline was heading, but I managed to find out what was going on and fixed those connections aswell.
But I noticed that central substation didn't seem to be properly mapped, so I think at somepoint the substations in Greece, even the ones that are already mapped in some extent, need to be rechecked by the local community.
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After I checked on openinframap.org again, I decided to try and add the connections in a recently built substation where those powerlines were crossing. ESRI had the most updated imagery in the area to contain the new substation. I managed to add several new pylons near it, and continued another powerline which was nearby.
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After I fixed that on #osm , I used @OpenInfraMap to see how it looked (data updating there really fast), I spotted a pylon nearby was in strange location in relation with the powerline. It must have been moved by mistake 2 years ago, so I fixed that aswell.
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So, I went for short trip today to check out how exactly two powerlines connect because there were three pylons really close to each other that it wasn't clear from imagery. It turned out they don't connect, but one goes beneath the other while also temporarily splitting in two parts.
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