The earliest settlers of Rapa Nui, also known as Easter Island, appear to have had some sort of contact with people from South America as early as 1,000 years ago, a new plant study finds.

One thousand years ago, the first settlers of Rapa Nui — also known as Easter Island — feasted on a fusion cuisine of plants native to Polynesia but also ones indigenous to South America, around 2,300 miles (3,700 kilometers) away, a new study finds.

Researchers discovered the food remnants by identifying starch grains clinging to obsidian blades at the archaeological site of Anakena, the earliest known settlement on Rapa Nui, which was occupied from about A.D. 1000 to 1300, according to the study, published Wednesday (March 20) in the journal PLOS One. The finding suggests that the early Polynesians had regular contact with the people of South America as far back as a millennium ago.