The huge dimensions of the Avebury stone monument has placed the village of Avebury on the map. Parts of the monument's circles can be see in the streets of the village, particularly in the two stone avenues, Kennet Avenue and Blackhampton Avenue, which lock part of the village within a triangle, known as the Avebury Triangle, a World Heritage Site. The part of the monument which has survived consists of earthworks, or dykes, formed by a ditch and an outter 421-m diametre henge. A 335-m diametre circle exists within the hendge. Some 98 sarsen stones originally stood here, some weighing more than four tons. Many theories exist about Avebury, just as many as those of Stonehendge, but non proven. Excavation discoveries are not persuasive due to the destruction of the stones. Nevertheless, some suppose that the stones once symbolised male and female figures. Others claim that the stones were selected simply because of their natural beauty and form. Also, bones found here give place to the theory that Avebury was once a burial ground.