Estimated dates of initial settlement of Easter Island have ranged from 300 to 1200 CE, though the current best estimate for colonization is in the 12th century CE. Easter Island colonization likely coincided with the arrival of the first settlers in Hawaii. Rectifications in radiocarbon dating have changed almost all of the previously posited early settlement dates in Polynesia. Ongoing archaeological studies provide this late date: "Radiocarbon dates for the earliest stratigraphic layers at Anakena, Easter Island, and analysis of previous radiocarbon dates imply that the island was colonized late, about 1200 AD. Significant ecological impacts and major cultural investments in monumental architecture and statuary thus began soon after initial settlement."