A prehistoric monument consisting of a circle of stone is called a henge. Stonehenge is probably the most famous henge in the world. The 5,000-year-old stone circle became a World Heritage Site in 1986 but, despite years of research and study, the reason behind its construction remains a mystery.

由一圈石头组成的史前遗迹被称为圆石阵。巨石阵可能是世界上最著名的圆石阵了。这个享有5000年历史的巨大石圈在1986 被列入世界文化遗址。不过尽管多年的研究和考察，巨石阵建造的原因仍旧是个谜。