5000 years old, this stone arrangement has astrological and ???? other significance. Nobody's really sure. Had a nice drive around the island and a lunch stop in East Loch Tarbert. There are many loch Tarberts. Tarbert means a narrow strip of land where one can drag a boat across from one side of the loch to the other. There are east and west loch Tarberts in several places and We have visited 3 of them.