On a balmy July afternoon, archaeologist Roos van Oosten strides through a muddied plot of land near the center of the Dutch city of Leiden and takes an exploratory sniff. The plot, bordered on all sides by apartment buildings, will soon be part of a housing development known as the Meelfabriek, but, for now, van Oosten and a team of excavators from RAAP Archaeological Consultancy are studying the remnants of a 400-year-old neighborhood.
With another sniff, van Oosten gestures to a brick-line