There are "stoneheges" pretty much all over Europe, apparently it was a "thing" for a long time.
Unless solar and lunar observations are predictable via on site positioning.....these stones should not be called Spanish nor stoneHENGE....THE article claims an age of 7000 years and a German excavation 100 years ago "discovered" this array of stones "believed to have supported a dome or roof for burials inside"....the article is more proof of global warming reducing the water level of this 1963 man made lake THIS SUMMER