Cascajal Block: Oldest Writing in America.

Anthropologists are excited about an ancient block of writing dated as early as 900 BC, the oldest in America and probably made by the Olmecs.

The block was carved from precious serpentine rock, suggesting it was probably a holy object used by high orders of society for some kind of ritual activity, she said.

The inscription is indecipherable but scientists hope that further excavations at the site could give clues to its content.

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