The Calanais Standing Stones consist of a stone circle of thirteen stones with a monolith near the middle. Five rows of standing stones connect to this circle. Two long rows of stones running almost parallel to each other from the stone circle to the north-northeast form a kind of avenue.
In addition, there are shorter rows of stones to the west-southwest, south and east-northeast. The stones are all of the same rock type, namely the local Lewisian gneiss. Within the stone circle is a chambered tomb to the east of the central stone.
The Calanais Stones are just 4.9 miles South of Tolsta Chaolais.