Hill of Tara 40
Image by otuathail3

"The main thing is that Tara probably wasn't all that important in the Neolithic."

This is herecy of course, but was Stonehenge?

What makes you say that about Stonehenge BN?

Just looking at the monument and ignoring the surrounding landscape. You have a constant reorganisation involving a large labour force with at least five successive structures over roughly 900years. I guess that would make it a pretty significant monument in it's day.