Statues aren’t the only mystery on Easter Island. Tablets found on the island bear a mysterious script, known as rongorongo, that has never been successfully deciphered.

Some scholars have pointed out similarities between the strange characters and the prehistoric script of the Indus Valley in India, 6,000 miles away, but others dispute this.

The islanders themselves give eager and varying accounts to archaeologists and historians, and perhaps they themselves don’t know. Some say that rongorongo means peace-peace, and that the documents record treaties, perhaps with visitors to the island.

So far, none of the attempts at translation have withstood peer review.