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Natural rock formations or man made?

Next to the road I work on constructing in FYR of Macedonia i found this formation in bushes. Could this be man made? This orange rock looks kind of out of place, it is around one meter high.
Other rocks are not very well visible because of dense bushes, but are also connected with cement like materials, I could notice that much.

https://photos.app.goo.gl/VsHThahaTyKDYAvWA