Who built the famous huge sculptures (Moai) on Easter Island?

Easter Island is a Chilean island in the southeastern Pacific Ocean. It is famous for its 887 extant monumental statues, called Moai, created by the early Rapa Nui people. In 1995, the United Nations Educational, Scientific and Cultural Organization (UNESCO) named Easter Island a World Heritage Site, with much of the island protected within Rapa Nui National Park.

Also, it turns out that the Moai are monolithic human figures which were carved by the Rapa Nui people on Easter Island in the years between 1250 and 1500 AD. Today, nearly half of the figures are still at Rano Raraku, the main Moai quarry. Others, in fact, hundreds have been transported from there and set on stone platforms called ahu around the island's perimeter. Almost all Moai have overly large heads three eighths the size of the whole statue. The Moai (monumental statues) are masterfully crafted and should be deeply appreciated.