The house where the floor was found dates back to the 17th century, but archaeologists believe the bones may belong to an older structure. New buildings were often built on old foundations, which may explain this discrepancy.
The reason for using bone instead of tiles remains unclear. Tiles were readily available at the time, so cost probably wasn’t a factor. Some suggest the bones were used as fillers or served some other purpose related to the homeowner’s work.
Source: Ferra

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