The largest moai, called Paro, was about 10 m high and weighed 75 tons. An unfinished statue 21 m high and weighing about 270 tons was also found.
About one-fifth of the moai statues had so-called pukao, which are special Polynesian red kooks also made of tuff, resembling hats.
About 95% of the existing moai were made at the Rano Raraku quarry (a volcanic crater about 700 m in diameter in the eastern part of the island, the bottom of which is occupied by a small volcanic lake), where there are still 394 moai. The quarry was suddenly abandoned for unknown reasons, and many of the statues were unfinished. Finished moai were transported from the quarry to their destination on logs and put upright with ropes.
