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"Now the piles have varying diameters, like 10 to 25 centimeters in height. And with about nine piles driven into the ground per square meter. So they use oak and pine and alder and larch and elm, or the primary woods that we use for these piles because they were durable and they resisted to decay. So the enduring nature of Venice's wooden foundations led to the belief that wood buried in the mud remains preserved."