look at the centre henge and go 2 fields away at 11 o'clock.
Also the first henge seems to have something similar to its right, shows better on other pics
PeteG
With 4 definite henges and possibly 2 more, this would be much more significant evidence of star alignments than a 3 ring system IF all the rings can be shown to correspond to some meaningful star pattern - Pliedes perhaps.