Since those aren’t, AFAIK, significant solar calendar dates, not agricultural dates, what does the alignment signify? I know the article says that is the beginning of their year, but WHY? What is special about that date?
Since any straight line pointing to anywhere in the ESE-SSE or WSW-SSW will ‘align’ with the same sunrise or sunset dates twice a year, which came first: the alignment causeway, or the calendar?
That’s my complaint about archaeoastronomy in general. Look at combos long enough, and find two stones that line up where they may have pointed at the solstice or equinox sunrise or sunset at some point in the past when the Earth pointed differently. Can’t miss. :^)
“Take a right where the old schoolhouse used to be.” — Rodney Dangerfield