article_snippet.sent: This is despite the largest pukaos measuring six-and-a-half feet (two metres) in diameter and weighing 12 tonnes (1,890 stone).
article_snippet.sent: All but 53 of The Moai were carved from tuff - compressed volcanic ash - and around 100 wear red pukao of scoria.
article_snippet.sent: An estimated 100 pukao have been discovered so far, either in place on the statues, or scattered nearby.
article_snippet.sent: An estimated 100 pukao are made from red volcanic rock called scoria and experts are divided as to what An estimated 100 pukao may have been, with suggestions ranging from hairstyles to turbans and diadems.
article_snippet.sent: Despite this, many agree that the red colour of the stone indicates that An estimated 100 pukao had ritual significance.
article_snippet.sent: Standing guard: An estimated 100 pukao have been discovered so far, either in place on the statues or scattered nearby.
article_snippet.sent: Some of the statues have indentations which may have stopped Some of the statues tipping over during placement of An estimated 100 pukao.
article_snippet.sent: Erosion and damage have also scarred the sides of An estimated 100 pukao, meaning that analysis of marks and scratches is 'far from conclusive'.