Few episodes occupy a darker place in maritime history than the wreck of the Batavia.

Wrecked off the mid-west coast of Western Australia in June 1629, 159 years before the First Fleet entered Sydney Harbour, the disaster offers a stark alternative to romanticised tales of exploration.

Batavia’s story is instead one of greed, mutiny, heroic resistance and mass murder, exposing the violence and ambition that accompanied early European ventures into Australian waters.

The ship’s story is also one of a massive global supply chain – part of which has remained hidden until now. In our new study published in the Journal of Archaeological Science: Reports, we trace the origins of some of the Batavia’s most important cargo: massive sandstone blocks.

The tiny crystal preserved in these rocks help paint a detailed picture of lives, labour and global connections nearly 400 years ago.

An immensely valuable cargo

The Batavia was the flagship of the Dutch East India Company. On its maiden voyage from the Dutch Republic to Java, it carried 341 passengers and crew, together with an immensely valuable cargo.

Among it was what mariners called “paying ballast”. This was heavy material that served two purposes: stabilising the ship and carrying commercial or practical value at its destination.

In the ship’s hold, this included thousands of bricks and large, carefully carved sandstone blocks intended for a monumental gateway or portico in the Dutch East........

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