The Giants, the Peat, and the Rediscovery

For most of the modern era, Callanish was barely visible, buried under its own accumulated peat until estate workers dug it back out.

Under the ground for centuries

Peat grew up around the standing stones over centuries of the wet Hebridean climate, in places covering their lower metre or more. In 1857 workers on the estate of Sir James Matheson cleared roughly one and a half metres of peat from around the stones, exposing a chambered cairn at the circle's centre that had been unknown before the clearance and giving the site close to its present appearance.

Local memory of the stones

Island tradition held that the stones were giants who refused to convert to Christianity when Saint Kieran preached there, and were turned to stone as a punishment. A separate strand of folklore describes a figure called the Shining One walking the length of the main avenue at midsummer sunrise, heralded by the call of a cuckoo, a story recorded from local informants well after the site's clearance rather than from any ancient source.

What the stones may track

Callanish sits where the southern moonrise at the eighteen and a half year lunar standstill appears to skim along a nearby hill ridge, an alignment argued by some archaeoastronomers to be deliberate, though, as with most such claims at prehistoric monuments, intent cannot be read directly from geometry alone.