I'm not anti-alignment; just unconvinced by many of the claims for very high accuracy.
Agreed. But of course a gap between rocks that casts a soltice sunbeam still works tolerably well. If they wanted absolute accuracy maybe they'd have kept with sticks rather than great big lumps of rock - which is why the whole thing strikes me as more likely to be symbolic rather than of specific use. The collection of pepper pots in my bay window tell me the time of year as accurately as Stonehenge...
But stones do work tolerably well. If you stand with your back against the northernmost stone of any circle you've got a pretty usable calendar. And clock.
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