Another form is the menhir, a simple upright stone usually placed with others to form a circle, as at Stonehenge and Avebury in England, or a straight alignment, as at Carnac in France.

另一种形式是石柱，这是一块与其他直立石块放一起组成一个圆圈的直立石碑，如英的石阵和爱扶倍利，或排成直线，如法国的卡尔纳克。