Achagoyle Bay is dominated by the large hill Beinn Ghlas, one of the Marilyns in southern Scotland, at 420m to the north.

It achieved notoriety in the 1970s when it was excavated by the local archaeological society, when a curious alignment of artificial structures came to light.

Two slender standing stones, of a height of slightly over 1m tall stood upright in clefts between the rocks.

Although they have fallen, these two stones would have lined up, on a notch between two mountains, on the distant horizon from the site, some 30 miles northeast along the loch.

The stones were designed, such that even in bad weather, a sighting would have still been made, that would appear exactly with the notch, and aligned perfectly.