Stone circles are defined as a circular spaces, delimited by an uneven number of purposely erected standing stones. Hong Kong has its share of these ancient artifacts though not as monumental as England's Stonehenge.
Hong Kong has two stone circles located on its outlying islands. The first one, discovered in the late 50s, is located in the northern part of Lamma Island. It was discovered by K M A Barnett, District Commissioner of the New Territories in 1956.
Known as the Lo Ah Tsai Stone Circle, it is comprised of twenty eight large stones, lying buried in the earth on a slope 100 metres above sea level, forming two overlapping stones circles. This stone circle was investigated by the Hong Kong University Archaeological Team in 1959, 1963 and 1982 respectively.
The other stone circle, referred to as the Fau Lau Stone Circle, was discovered at Fan Lau, on Lantau Island in 1980 at a site located 40 metre above sea level.This stone circle is a Declared monument in Hong Kong. It is assumed that it is a megalithic structure made during the late Neolithic (i.e. New Stone Age) and early Bronze Age.
Similar structures are discovered in China and there is no reason why a stone circle should not occur in Hong Kong which is rich in Neolithic and Bronze Age artifacts. The purpose of the stone circles are not known, but historians believe that the structures were used for ritualistic activities.